Fix missing RuneLocale on FreeBSD.
Fix missing RuneLocale on FreeBSD.

Without this patch the build breaks with errors like this:

    /usr/include/xlocale/_ctype.h:52:1: error: unknown type name '_RuneLocale'
    _RuneLocale     *__runes_for_locale(locale_t, int*);
    ^

mskvortsov/coreclr,Lucrecious/coreclr,OryJuVog/coreclr,jhendrixMSFT/coreclr,GuilhermeSa/coreclr,cshung/coreclr,fieryorc/coreclr,Djuffin/coreclr,krytarowski/coreclr,AlexGhiondea/coreclr,josteink/coreclr,mocsy/coreclr,Djuffin/coreclr,martinwoodward/coreclr,blackdwarf/coreclr,DickvdBrink/coreclr,James-Ko/coreclr,jamesqo/coreclr,ericeil/coreclr,blackdwarf/coreclr,naamunds/coreclr,dkorolev/coreclr,yizhang82/coreclr,wtgodbe/coreclr,chuck-mitchell/coreclr,DasAllFolks/coreclr,ZhichengZhu/coreclr,alexperovich/coreclr,grokys/coreclr,roncain/coreclr,swgillespie/coreclr,fernando-rodriguez/coreclr,xoofx/coreclr,blackdwarf/coreclr,hseok-oh/coreclr,Samana/coreclr,misterzik/coreclr,OryJuVog/coreclr,jamesqo/coreclr,naamunds/coreclr,kyulee1/coreclr,sejongoh/coreclr,KrzysztofCwalina/coreclr,ZhichengZhu/coreclr,jhendrixMSFT/coreclr,chenxizhang/coreclr,sergey-raevskiy/coreclr,gitchomik/coreclr,richardlford/coreclr,kyulee1/coreclr,krk/coreclr,benpye/coreclr,botaberg/coreclr,JonHanna/coreclr,spoiledsport/coreclr,fernando-rodriguez/coreclr,swgillespie/coreclr,hseok-oh/coreclr,shahid-pk/coreclr,James-Ko/coreclr,cmckinsey/coreclr,blackdwarf/coreclr,Dmitry-Me/coreclr,richardlford/coreclr,krk/coreclr,bjjones/coreclr,roncain/coreclr,mokchhya/coreclr,zmaruo/coreclr,gkhanna79/coreclr,mocsy/coreclr,russellhadley/coreclr,neurospeech/coreclr,rartemev/coreclr,James-Ko/coreclr,misterzik/coreclr,dkorolev/coreclr,schellap/coreclr,benpye/coreclr,vinnyrom/coreclr,ragmani/coreclr,jakesays/coreclr,LLITCHEV/coreclr,rartemev/coreclr,sergey-raevskiy/coreclr,GuilhermeSa/coreclr,bartonjs/coreclr,AlfredoMS/coreclr,martinwoodward/coreclr,krytarowski/coreclr,fieryorc/coreclr,Lucrecious/coreclr,SpotLabsNET/coreclr,wtgodbe/coreclr,Dmitry-Me/coreclr,wateret/coreclr,Alcaro/coreclr,orthoxerox/coreclr,cmckinsey/coreclr,stormleoxia/coreclr,sperling/coreclr,wkchoy74/coreclr,bartonjs/coreclr,Dmitry-Me/coreclr,russellhadley/coreclr,bartonjs/coreclr,Samana/coreclr,ktos/coreclr,ericeil/coreclr,ktos/coreclr,josteink/coreclr,OryJuVog/coreclr,stormleoxia/coreclr,bitcrazed/coreclr,cydhaselton/coreclr,AlexGhiondea/coreclr,swgillespie/coreclr,botaberg/coreclr,qiudesong/coreclr,shahid-pk/coreclr,chaos7theory/coreclr,wtgodbe/coreclr,GuilhermeSa/coreclr,neurospeech/coreclr,krixalis/coreclr,alexperovich/coreclr,vinnyrom/coreclr,pgavlin/coreclr,LLITCHEV/coreclr,sejongoh/coreclr,perfectphase/coreclr,libengu/coreclr,botaberg/coreclr,tijoytom/coreclr,matthubin/coreclr,martinwoodward/coreclr,david-mitchell/coreclr,bjjones/coreclr,jhendrixMSFT/coreclr,orthoxerox/coreclr,hanu412/coreclr,mskvortsov/coreclr,cshung/coreclr,taylorjonl/coreclr,kyulee1/coreclr,KrzysztofCwalina/coreclr,chrishaly/coreclr,ktos/coreclr,taylorjonl/coreclr,LLITCHEV/coreclr,wateret/coreclr,parjong/coreclr,ruben-ayrapetyan/coreclr,chuck-mitchell/coreclr,poizan42/coreclr,Godin/coreclr,DickvdBrink/coreclr,manu-silicon/coreclr,mocsy/coreclr,shahid-pk/coreclr,andschwa/coreclr,benpye/coreclr,hseok-oh/coreclr,AlexGhiondea/coreclr,mmitche/coreclr,Dmitry-Me/coreclr,gitchomik/coreclr,chaos7theory/coreclr,gitchomik/coreclr,roncain/coreclr,krk/coreclr,AlexGhiondea/coreclr,jakesays/coreclr,naamunds/coreclr,bitcrazed/coreclr,ragmani/coreclr,ytechie/coreclr,AlfredoMS/coreclr,manu-silicon/coreclr,shana/coreclr,tijoytom/coreclr,ytechie/coreclr,bartdesmet/coreclr,fieryorc/coreclr,bitcrazed/coreclr,ericeil/coreclr,mocsy/coreclr,sejongoh/coreclr,ganeshran/coreclr,mokchhya/coreclr,bjjones/coreclr,mocsy/coreclr,perfectphase/coreclr,ytechie/coreclr,jakesays/coreclr,martinwoodward/coreclr,dpodder/coreclr,yizhang82/coreclr,cydhaselton/coreclr,cydhaselton/coreclr,ramarag/coreclr,geertdoornbos/coreclr,ktos/coreclr,david-mitchell/coreclr,poizan42/coreclr,schellap/coreclr,ruben-ayrapetyan/coreclr,martinwoodward/coreclr,ZhichengZhu/coreclr,wtgodbe/coreclr,fieryorc/coreclr,qiudesong/coreclr,chrishaly/coreclr,josteink/coreclr,bitcrazed/coreclr,MCGPPeters/coreclr,hanu412/coreclr,benpye/coreclr,hanu412/coreclr,josteink/coreclr,kyulee1/coreclr,spoiledsport/coreclr,tijoytom/coreclr,orthoxerox/coreclr,fieryorc/coreclr,roncain/coreclr,wkchoy74/coreclr,mokchhya/coreclr,lzcj4/coreclr,chuck-mitchell/coreclr,yeaicc/coreclr,fffej/coreclr,sejongoh/coreclr,naamunds/coreclr,ruben-ayrapetyan/coreclr,neurospeech/coreclr,david-mitchell/coreclr,sjsinju/coreclr,SlavaRa/coreclr,krixalis/coreclr,ruben-ayrapetyan/coreclr,krk/coreclr,serenabenny/coreclr,mmitche/coreclr,YongseopKim/coreclr,hseok-oh/coreclr,jhendrixMSFT/coreclr,dasMulli/coreclr,matthubin/coreclr,sagood/coreclr,schellap/coreclr,geertdoornbos/coreclr,iamjasonp/coreclr,jamesqo/coreclr,Dmitry-Me/coreclr,Samana/coreclr,andschwa/coreclr,chenxizhang/coreclr,swgillespie/coreclr,cmckinsey/coreclr,vinnyrom/coreclr,Alcaro/coreclr,manu-silicon/coreclr,Sridhar-MS/coreclr,yeaicc/coreclr,Godin/coreclr,pgavlin/coreclr,qiudesong/coreclr,LLITCHEV/coreclr,david-mitchell/coreclr,chrishaly/coreclr,misterzik/coreclr,cmckinsey/coreclr,ktos/coreclr,serenabenny/coreclr,OryJuVog/coreclr,parjong/coreclr,sjsinju/coreclr,poizan42/coreclr,serenabenny/coreclr,neurospeech/coreclr,xtypebee/coreclr,ruben-ayrapetyan/coreclr,Lucrecious/coreclr,neurospeech/coreclr,Samana/coreclr,DasAllFolks/coreclr,GuilhermeSa/coreclr,schellap/coreclr,wtgodbe/coreclr,alexperovich/coreclr,iamjasonp/coreclr,ramarag/coreclr,qiudesong/coreclr,mmitche/coreclr,matthubin/coreclr,yizhang82/coreclr,geertdoornbos/coreclr,sjsinju/coreclr,orthoxerox/coreclr,ganeshran/coreclr,jamesqo/coreclr,sejongoh/coreclr,hanu412/coreclr,serenabenny/coreclr,andschwa/coreclr,SlavaRa/coreclr,alexperovich/coreclr,krk/coreclr,schellap/coreclr,schellap/coreclr,ramarag/coreclr,SpotLabsNET/coreclr,yizhang82/coreclr,apanda/coreclr,DasAllFolks/coreclr,mocsy/coreclr,JosephTremoulet/coreclr,manu-silicon/coreclr,dpodder/coreclr,cmckinsey/coreclr,MCGPPeters/coreclr,yeaicc/coreclr,wkchoy74/coreclr,ganeshran/coreclr,bartdesmet/coreclr,iamjasonp/coreclr,wateret/coreclr,sagood/coreclr,tijoytom/coreclr,cmckinsey/coreclr,dasMulli/coreclr,Lucrecious/coreclr,ramarag/coreclr,Godin/coreclr,bitcrazed/coreclr,bartdesmet/coreclr,fffej/coreclr,russellhadley/coreclr,naamunds/coreclr,Samana/coreclr,dasMulli/coreclr,grokys/coreclr,sagood/coreclr,serenabenny/coreclr,sergey-raevskiy/coreclr,ganeshran/coreclr,zmaruo/coreclr,mskvortsov/coreclr,sergey-raevskiy/coreclr,jamesqo/coreclr,Lucrecious/coreclr,DasAllFolks/coreclr,dkorolev/coreclr,sejongoh/coreclr,zmaruo/coreclr,JosephTremoulet/coreclr,josteink/coreclr,MCGPPeters/coreclr,grokys/coreclr,matthubin/coreclr,dkorolev/coreclr,roncain/coreclr,schellap/coreclr,ganeshran/coreclr,hseok-oh/coreclr,chuck-mitchell/coreclr,bjjones/coreclr,ytechie/coreclr,sejongoh/coreclr,SlavaRa/coreclr,andschwa/coreclr,dpodder/coreclr,taylorjonl/coreclr,mmitche/coreclr,richardlford/coreclr,wateret/coreclr,manu-silicon/coreclr,misterzik/coreclr,xoofx/coreclr,swgillespie/coreclr,DickvdBrink/coreclr,benpye/coreclr,KrzysztofCwalina/coreclr,chaos7theory/coreclr,mskvortsov/coreclr,apanda/coreclr,bartdesmet/coreclr,bjjones/coreclr,yizhang82/coreclr,botaberg/coreclr,mskvortsov/coreclr,blackdwarf/coreclr,ramarag/coreclr,manu-silicon/coreclr,pgavlin/coreclr,stormleoxia/coreclr,martinwoodward/coreclr,ragmani/coreclr,blackdwarf/coreclr,gkhanna79/coreclr,ganeshran/coreclr,sjsinju/coreclr,iamjasonp/coreclr,GuilhermeSa/coreclr,taylorjonl/coreclr,ZhichengZhu/coreclr,dasMulli/coreclr,vinnyrom/coreclr,russellhadley/coreclr,fffej/coreclr,xtypebee/coreclr,grokys/coreclr,stormleoxia/coreclr,krixalis/coreclr,iamjasonp/coreclr,JosephTremoulet/coreclr,cshung/coreclr,SlavaRa/coreclr,gkhanna79/coreclr,mokchhya/coreclr,Alcaro/coreclr,fernando-rodriguez/coreclr,hanu412/coreclr,chenxizhang/coreclr,LLITCHEV/coreclr,Djuffin/coreclr,sjsinju/coreclr,Lucrecious/coreclr,alexperovich/coreclr,pgavlin/coreclr,ragmani/coreclr,jhendrixMSFT/coreclr,grokys/coreclr,vinnyrom/coreclr,shana/coreclr,ericeil/coreclr,James-Ko/coreclr,mokchhya/coreclr,benpye/coreclr,tijoytom/coreclr,JonHanna/coreclr,hanu412/coreclr,dpodder/coreclr,poizan42/coreclr,serenabenny/coreclr,yizhang82/coreclr,lzcj4/coreclr,pgavlin/coreclr,bartonjs/coreclr,gitchomik/coreclr,bartonjs/coreclr,sjsinju/coreclr,fffej/coreclr,matthubin/coreclr,lzcj4/coreclr,dasMulli/coreclr,xoofx/coreclr,perfectphase/coreclr,josteink/coreclr,MCGPPeters/coreclr,blackdwarf/coreclr,taylorjonl/coreclr,YongseopKim/coreclr,shana/coreclr,misterzik/coreclr,chrishaly/coreclr,parjong/coreclr,fieryorc/coreclr,geertdoornbos/coreclr,naamunds/coreclr,chenxizhang/coreclr,botaberg/coreclr,bartdesmet/coreclr,chuck-mitchell/coreclr,fffej/coreclr,david-mitchell/coreclr,Sridhar-MS/coreclr,gitchomik/coreclr,chaos7theory/coreclr,xoofx/coreclr,Alcaro/coreclr,dkorolev/coreclr,DickvdBrink/coreclr,sperling/coreclr,cydhaselton/coreclr,bartonjs/coreclr,Dmitry-Me/coreclr,OryJuVog/coreclr,xoofx/coreclr,ruben-ayrapetyan/coreclr,ZhichengZhu/coreclr,parjong/coreclr,AlfredoMS/coreclr,matthubin/coreclr,JosephTremoulet/coreclr,DasAllFolks/coreclr,jakesays/coreclr,AlfredoMS/coreclr,bartdesmet/coreclr,krytarowski/coreclr,SpotLabsNET/coreclr,dasMulli/coreclr,gkhanna79/coreclr,vinnyrom/coreclr,grokys/coreclr,bitcrazed/coreclr,krixalis/coreclr,James-Ko/coreclr,shahid-pk/coreclr,SpotLabsNET/coreclr,chaos7theory/coreclr,mocsy/coreclr,LLITCHEV/coreclr,Djuffin/coreclr,KrzysztofCwalina/coreclr,lzcj4/coreclr,sperling/coreclr,bitcrazed/coreclr,Sridhar-MS/coreclr,krixalis/coreclr,MCGPPeters/coreclr,qiudesong/coreclr,xoofx/coreclr,manu-silicon/coreclr,dasMulli/coreclr,david-mitchell/coreclr,YongseopKim/coreclr,KrzysztofCwalina/coreclr,wateret/coreclr,gkhanna79/coreclr,roncain/coreclr,sperling/coreclr,spoiledsport/coreclr,Djuffin/coreclr,YongseopKim/coreclr,yeaicc/coreclr,krytarowski/coreclr,apanda/coreclr,fernando-rodriguez/coreclr,Samana/coreclr,ytechie/coreclr,lzcj4/coreclr,neurospeech/coreclr,krytarowski/coreclr,ytechie/coreclr,AlexGhiondea/coreclr,Alcaro/coreclr,stormleoxia/coreclr,cshung/coreclr,mokchhya/coreclr,KrzysztofCwalina/coreclr,DickvdBrink/coreclr,Sridhar-MS/coreclr,chenxizhang/coreclr,shana/coreclr,andschwa/coreclr,Godin/coreclr,YongseopKim/coreclr,KrzysztofCwalina/coreclr,poizan42/coreclr,cydhaselton/coreclr,JonHanna/coreclr,wkchoy74/coreclr,SpotLabsNET/coreclr,pgavlin/coreclr,vinnyrom/coreclr,wkchoy74/coreclr,ktos/coreclr,sperling/coreclr,James-Ko/coreclr,orthoxerox/coreclr,JonHanna/coreclr,yeaicc/coreclr,yeaicc/coreclr,fernando-rodriguez/coreclr,martinwoodward/coreclr,dpodder/coreclr,spoiledsport/coreclr,russellhadley/coreclr,SlavaRa/coreclr,jamesqo/coreclr,JonHanna/coreclr,JosephTremoulet/coreclr,sagood/coreclr,gitchomik/coreclr,perfectphase/coreclr,xtypebee/coreclr,kyulee1/coreclr,parjong/coreclr,xtypebee/coreclr,AlfredoMS/coreclr,zmaruo/coreclr,chrishaly/coreclr,fernando-rodriguez/coreclr,cshung/coreclr,geertdoornbos/coreclr,DickvdBrink/coreclr,apanda/coreclr,krk/coreclr,Sridhar-MS/coreclr,kyulee1/coreclr,Godin/coreclr,geertdoornbos/coreclr,shahid-pk/coreclr,sperling/coreclr,lzcj4/coreclr,taylorjonl/coreclr,rartemev/coreclr,misterzik/coreclr,krytarowski/coreclr,ramarag/coreclr,jhendrixMSFT/coreclr,sperling/coreclr,swgillespie/coreclr,DasAllFolks/coreclr,shana/coreclr,mmitche/coreclr,ragmani/coreclr,LLITCHEV/coreclr,shana/coreclr,mmitche/coreclr,wateret/coreclr,gkhanna79/coreclr,tijoytom/coreclr,alexperovich/coreclr,sergey-raevskiy/coreclr,bartonjs/coreclr,dkorolev/coreclr,cydhaselton/coreclr,OryJuVog/coreclr,ragmani/coreclr,JosephTremoulet/coreclr,sagood/coreclr,russellhadley/coreclr,chaos7theory/coreclr,bartdesmet/coreclr,naamunds/coreclr,josteink/coreclr,andschwa/coreclr,botaberg/coreclr,AlexGhiondea/coreclr,wkchoy74/coreclr,ericeil/coreclr,xtypebee/coreclr,apanda/coreclr,Godin/coreclr,Lucrecious/coreclr,richardlford/coreclr,shahid-pk/coreclr,taylorjonl/coreclr,Godin/coreclr,chuck-mitchell/coreclr,ZhichengZhu/coreclr,ramarag/coreclr,ZhichengZhu/coreclr,chuck-mitchell/coreclr,iamjasonp/coreclr,cshung/coreclr,GuilhermeSa/coreclr,SpotLabsNET/coreclr,jhendrixMSFT/coreclr,qiudesong/coreclr,richardlford/coreclr,mskvortsov/coreclr,Sridhar-MS/coreclr,spoiledsport/coreclr,krixalis/coreclr,dpodder/coreclr,hseok-oh/coreclr,SlavaRa/coreclr,swgillespie/coreclr,Alcaro/coreclr,perfectphase/coreclr,chrishaly/coreclr,andschwa/coreclr,libengu/coreclr,rartemev/coreclr,bjjones/coreclr,rartemev/coreclr,AlfredoMS/coreclr,MCGPPeters/coreclr,spoiledsport/coreclr,sergey-raevskiy/coreclr,Dmitry-Me/coreclr,apanda/coreclr,libengu/coreclr,jakesays/coreclr,YongseopKim/coreclr,ericeil/coreclr,jakesays/coreclr,richardlford/coreclr,libengu/coreclr,zmaruo/coreclr,sagood/coreclr,poizan42/coreclr,stormleoxia/coreclr,orthoxerox/coreclr,JonHanna/coreclr,ktos/coreclr,wtgodbe/coreclr,wkchoy74/coreclr,libengu/coreclr,rartemev/coreclr,geertdoornbos/coreclr,stormleoxia/coreclr,zmaruo/coreclr,perfectphase/coreclr,Djuffin/coreclr,libengu/coreclr,shahid-pk/coreclr,yeaicc/coreclr,parjong/coreclr,roncain/coreclr,xtypebee/coreclr,mokchhya/coreclr,cmckinsey/coreclr,fffej/coreclr,chenxizhang/coreclr,benpye/coreclr