Improve build-rootfs script.
Improve build-rootfs script.

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