Expose Environment.Exit in mscorlib.dll.
Expose Environment.Exit in mscorlib.dll.

This will later be consumed by the System.Runtime.Extensions contract.

[tfs-changeset: 1542759]

cmckinsey/coreclr,ramarag/coreclr,krk/coreclr,gkhanna79/coreclr,martinwoodward/coreclr,dpodder/coreclr,gkhanna79/coreclr,cmckinsey/coreclr,blackdwarf/coreclr,blackdwarf/coreclr,dasMulli/coreclr,roncain/coreclr,mokchhya/coreclr,sagood/coreclr,Godin/coreclr,hseok-oh/coreclr,KrzysztofCwalina/coreclr,AlfredoMS/coreclr,sjsinju/coreclr,andschwa/coreclr,jhendrixMSFT/coreclr,neurospeech/coreclr,ZhichengZhu/coreclr,parjong/coreclr,dpodder/coreclr,shahid-pk/coreclr,russellhadley/coreclr,krytarowski/coreclr,blackdwarf/coreclr,poizan42/coreclr,sjsinju/coreclr,ragmani/coreclr,vinnyrom/coreclr,qiudesong/coreclr,shahid-pk/coreclr,martinwoodward/coreclr,qiudesong/coreclr,chuck-mitchell/coreclr,cydhaselton/coreclr,chuck-mitchell/coreclr,benpye/coreclr,josteink/coreclr,bitcrazed/coreclr,martinwoodward/coreclr,AlexGhiondea/coreclr,ramarag/coreclr,cydhaselton/coreclr,alexperovich/coreclr,cmckinsey/coreclr,jamesqo/coreclr,KrzysztofCwalina/coreclr,krk/coreclr,James-Ko/coreclr,kyulee1/coreclr,sperling/coreclr,wateret/coreclr,sjsinju/coreclr,roncain/coreclr,qiudesong/coreclr,geertdoornbos/coreclr,cmckinsey/coreclr,wateret/coreclr,cydhaselton/coreclr,krk/coreclr,josteink/coreclr,jhendrixMSFT/coreclr,krytarowski/coreclr,krytarowski/coreclr,neurospeech/coreclr,sejongoh/coreclr,manu-silicon/coreclr,cmckinsey/coreclr,tijoytom/coreclr,bartonjs/coreclr,krk/coreclr,taylorjonl/coreclr,ruben-ayrapetyan/coreclr,Dmitry-Me/coreclr,botaberg/coreclr,Godin/coreclr,josteink/coreclr,sejongoh/coreclr,hseok-oh/coreclr,blackdwarf/coreclr,mmitche/coreclr,mskvortsov/coreclr,rartemev/coreclr,sagood/coreclr,mmitche/coreclr,roncain/coreclr,ZhichengZhu/coreclr,wkchoy74/coreclr,alexperovich/coreclr,mokchhya/coreclr,wtgodbe/coreclr,sagood/coreclr,chuck-mitchell/coreclr,YongseopKim/coreclr,ktos/coreclr,josteink/coreclr,yeaicc/coreclr,mskvortsov/coreclr,Dmitry-Me/coreclr,YongseopKim/coreclr,sjsinju/coreclr,parjong/coreclr,sejongoh/coreclr,LLITCHEV/coreclr,qiudesong/coreclr,shahid-pk/coreclr,yizhang82/coreclr,AlexGhiondea/coreclr,rartemev/coreclr,Godin/coreclr,sperling/coreclr,JonHanna/coreclr,SlavaRa/coreclr,martinwoodward/coreclr,yeaicc/coreclr,hseok-oh/coreclr,iamjasonp/coreclr,James-Ko/coreclr,cshung/coreclr,ktos/coreclr,naamunds/coreclr,stormleoxia/coreclr,JonHanna/coreclr,jhendrixMSFT/coreclr,kyulee1/coreclr,wkchoy74/coreclr,cmckinsey/coreclr,kyulee1/coreclr,manu-silicon/coreclr,SlavaRa/coreclr,gkhanna79/coreclr,JosephTremoulet/coreclr,JosephTremoulet/coreclr,schellap/coreclr,ktos/coreclr,yeaicc/coreclr,dpodder/coreclr,mmitche/coreclr,JosephTremoulet/coreclr,geertdoornbos/coreclr,chuck-mitchell/coreclr,shahid-pk/coreclr,bartdesmet/coreclr,parjong/coreclr,mskvortsov/coreclr,ramarag/coreclr,stormleoxia/coreclr,wtgodbe/coreclr,wkchoy74/coreclr,dasMulli/coreclr,dasMulli/coreclr,iamjasonp/coreclr,yeaicc/coreclr,ZhichengZhu/coreclr,sperling/coreclr,mskvortsov/coreclr,cshung/coreclr,Lucrecious/coreclr,krk/coreclr,KrzysztofCwalina/coreclr,alexperovich/coreclr,wkchoy74/coreclr,ruben-ayrapetyan/coreclr,bartonjs/coreclr,LLITCHEV/coreclr,mocsy/coreclr,mocsy/coreclr,Lucrecious/coreclr,gkhanna79/coreclr,andschwa/coreclr,AlexGhiondea/coreclr,sejongoh/coreclr,russellhadley/coreclr,bartdesmet/coreclr,swgillespie/coreclr,cmckinsey/coreclr,poizan42/coreclr,bartdesmet/coreclr,KrzysztofCwalina/coreclr,Lucrecious/coreclr,benpye/coreclr,YongseopKim/coreclr,sejongoh/coreclr,Dmitry-Me/coreclr,pgavlin/coreclr,ruben-ayrapetyan/coreclr,JonHanna/coreclr,chuck-mitchell/coreclr,ktos/coreclr,LLITCHEV/coreclr,pgavlin/coreclr,bartonjs/coreclr,bartdesmet/coreclr,mmitche/coreclr,ragmani/coreclr,wtgodbe/coreclr,chuck-mitchell/coreclr,AlexGhiondea/coreclr,Godin/coreclr,stormleoxia/coreclr,cshung/coreclr,cydhaselton/coreclr,taylorjonl/coreclr,dpodder/coreclr,sjsinju/coreclr,mokchhya/coreclr,taylorjonl/coreclr,ZhichengZhu/coreclr,kyulee1/coreclr,jamesqo/coreclr,ruben-ayrapetyan/coreclr,dpodder/coreclr,swgillespie/coreclr,James-Ko/coreclr,JosephTremoulet/coreclr,andschwa/coreclr,sperling/coreclr,YongseopKim/coreclr,schellap/coreclr,SlavaRa/coreclr,vinnyrom/coreclr,bartdesmet/coreclr,tijoytom/coreclr,poizan42/coreclr,pgavlin/coreclr,schellap/coreclr,manu-silicon/coreclr,ktos/coreclr,neurospeech/coreclr,bartonjs/coreclr,naamunds/coreclr,ZhichengZhu/coreclr,sjsinju/coreclr,bitcrazed/coreclr,ramarag/coreclr,jhendrixMSFT/coreclr,dasMulli/coreclr,botaberg/coreclr,taylorjonl/coreclr,sagood/coreclr,manu-silicon/coreclr,geertdoornbos/coreclr,andschwa/coreclr,botaberg/coreclr,yeaicc/coreclr,russellhadley/coreclr,bartdesmet/coreclr,botaberg/coreclr,martinwoodward/coreclr,geertdoornbos/coreclr,AlfredoMS/coreclr,wateret/coreclr,tijoytom/coreclr,mokchhya/coreclr,hseok-oh/coreclr,cydhaselton/coreclr,dpodder/coreclr,neurospeech/coreclr,taylorjonl/coreclr,andschwa/coreclr,wkchoy74/coreclr,mocsy/coreclr,naamunds/coreclr,krytarowski/coreclr,wkchoy74/coreclr,pgavlin/coreclr,naamunds/coreclr,tijoytom/coreclr,wateret/coreclr,YongseopKim/coreclr,blackdwarf/coreclr,jhendrixMSFT/coreclr,iamjasonp/coreclr,sagood/coreclr,tijoytom/coreclr,jamesqo/coreclr,ragmani/coreclr,Dmitry-Me/coreclr,naamunds/coreclr,ramarag/coreclr,neurospeech/coreclr,bitcrazed/coreclr,mskvortsov/coreclr,benpye/coreclr,ramarag/coreclr,alexperovich/coreclr,parjong/coreclr,roncain/coreclr,rartemev/coreclr,kyulee1/coreclr,cshung/coreclr,Lucrecious/coreclr,mocsy/coreclr,jhendrixMSFT/coreclr,taylorjonl/coreclr,yizhang82/coreclr,yizhang82/coreclr,manu-silicon/coreclr,sejongoh/coreclr,botaberg/coreclr,krytarowski/coreclr,James-Ko/coreclr,chuck-mitchell/coreclr,martinwoodward/coreclr,vinnyrom/coreclr,schellap/coreclr,stormleoxia/coreclr,SlavaRa/coreclr,rartemev/coreclr,mmitche/coreclr,botaberg/coreclr,gkhanna79/coreclr,tijoytom/coreclr,rartemev/coreclr,sejongoh/coreclr,swgillespie/coreclr,shahid-pk/coreclr,jamesqo/coreclr,mokchhya/coreclr,cshung/coreclr,hseok-oh/coreclr,naamunds/coreclr,jhendrixMSFT/coreclr,benpye/coreclr,ramarag/coreclr,hseok-oh/coreclr,geertdoornbos/coreclr,josteink/coreclr,YongseopKim/coreclr,Dmitry-Me/coreclr,Godin/coreclr,vinnyrom/coreclr,swgillespie/coreclr,russellhadley/coreclr,blackdwarf/coreclr,alexperovich/coreclr,mokchhya/coreclr,manu-silicon/coreclr,schellap/coreclr,dasMulli/coreclr,sperling/coreclr,benpye/coreclr,stormleoxia/coreclr,mokchhya/coreclr,KrzysztofCwalina/coreclr,vinnyrom/coreclr,AlexGhiondea/coreclr,LLITCHEV/coreclr,bartonjs/coreclr,yizhang82/coreclr,yizhang82/coreclr,wateret/coreclr,poizan42/coreclr,pgavlin/coreclr,iamjasonp/coreclr,LLITCHEV/coreclr,mocsy/coreclr,manu-silicon/coreclr,wkchoy74/coreclr,ktos/coreclr,gkhanna79/coreclr,mmitche/coreclr,JonHanna/coreclr,shahid-pk/coreclr,James-Ko/coreclr,JosephTremoulet/coreclr,yeaicc/coreclr,LLITCHEV/coreclr,yizhang82/coreclr,wtgodbe/coreclr,rartemev/coreclr,JosephTremoulet/coreclr,cydhaselton/coreclr,qiudesong/coreclr,taylorjonl/coreclr,poizan42/coreclr,wtgodbe/coreclr,mskvortsov/coreclr,dasMulli/coreclr,sagood/coreclr,geertdoornbos/coreclr,AlexGhiondea/coreclr,benpye/coreclr,josteink/coreclr,benpye/coreclr,AlfredoMS/coreclr,swgillespie/coreclr,ragmani/coreclr,Lucrecious/coreclr,jamesqo/coreclr,AlfredoMS/coreclr,Dmitry-Me/coreclr,shahid-pk/coreclr,roncain/coreclr,iamjasonp/coreclr,bitcrazed/coreclr,schellap/coreclr,KrzysztofCwalina/coreclr,pgavlin/coreclr,ZhichengZhu/coreclr,josteink/coreclr,SlavaRa/coreclr,cshung/coreclr,mocsy/coreclr,ruben-ayrapetyan/coreclr,blackdwarf/coreclr,swgillespie/coreclr,andschwa/coreclr,krytarowski/coreclr,Lucrecious/coreclr,wateret/coreclr,yeaicc/coreclr,stormleoxia/coreclr,roncain/coreclr,JonHanna/coreclr,russellhadley/coreclr,JonHanna/coreclr,wtgodbe/coreclr,Dmitry-Me/coreclr,stormleoxia/coreclr,bitcrazed/coreclr,ruben-ayrapetyan/coreclr,AlfredoMS/coreclr,poizan42/coreclr,ktos/coreclr,LLITCHEV/coreclr,ragmani/coreclr,kyulee1/coreclr,mocsy/coreclr,sperling/coreclr,bitcrazed/coreclr,vinnyrom/coreclr,sperling/coreclr,vinnyrom/coreclr,ZhichengZhu/coreclr,bartdesmet/coreclr,alexperovich/coreclr,dasMulli/coreclr,jamesqo/coreclr,ragmani/coreclr,geertdoornbos/coreclr,Godin/coreclr,Godin/coreclr,SlavaRa/coreclr,krk/coreclr,qiudesong/coreclr,Lucrecious/coreclr,martinwoodward/coreclr,parjong/coreclr,swgillespie/coreclr,iamjasonp/coreclr,andschwa/coreclr,bartonjs/coreclr,bitcrazed/coreclr,neurospeech/coreclr,KrzysztofCwalina/coreclr,James-Ko/coreclr,russellhadley/coreclr,bartonjs/coreclr,parjong/coreclr,AlfredoMS/coreclr,roncain/coreclr,naamunds/coreclr,schellap/coreclr