Explicitly specify POSIX.1-2008 conformance - Fix build on glibc versions prior to 2.19
Explicitly specify POSIX.1-2008 conformance
- Fix build on glibc versions prior to 2.19

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