Add Ubuntu16.04 support.
Add Ubuntu16.04 support.

cartermp/corefx,gkhanna79/corefx,lggomez/corefx,jhendrixMSFT/corefx,cartermp/corefx,JosephTremoulet/corefx,wtgodbe/corefx,stephenmichaelf/corefx,tstringer/corefx,MaggieTsang/corefx,dsplaisted/corefx,yizhang82/corefx,krytarowski/corefx,khdang/corefx,wtgodbe/corefx,YoupHulsebos/corefx,alphonsekurian/corefx,mazong1123/corefx,stephenmichaelf/corefx,ptoonen/corefx,stephenmichaelf/corefx,Priya91/corefx-1,Jiayili1/corefx,shimingsg/corefx,seanshpark/corefx,seanshpark/corefx,alexperovich/corefx,the-dwyer/corefx,dotnet-bot/corefx,khdang/corefx,the-dwyer/corefx,alexperovich/corefx,ptoonen/corefx,cydhaselton/corefx,dsplaisted/corefx,tstringer/corefx,krytarowski/corefx,twsouthwick/corefx,BrennanConroy/corefx,alphonsekurian/corefx,ravimeda/corefx,rjxby/corefx,ptoonen/corefx,gkhanna79/corefx,krk/corefx,lggomez/corefx,rubo/corefx,Chrisboh/corefx,krk/corefx,cartermp/corefx,iamjasonp/corefx,seanshpark/corefx,rahku/corefx,adamralph/corefx,shmao/corefx,the-dwyer/corefx,JosephTremoulet/corefx,DnlHarvey/corefx,ViktorHofer/corefx,rahku/corefx,fgreinacher/corefx,shimingsg/corefx,billwert/corefx,yizhang82/corefx,stephenmichaelf/corefx,zhenlan/corefx,elijah6/corefx,krk/corefx,ericstj/corefx,ericstj/corefx,richlander/corefx,Chrisboh/corefx,ellismg/corefx,mmitche/corefx,marksmeltzer/corefx,iamjasonp/corefx,MaggieTsang/corefx,lggomez/corefx,dhoehna/corefx,YoupHulsebos/corefx,yizhang82/corefx,dhoehna/corefx,parjong/corefx,tijoytom/corefx,rahku/corefx,billwert/corefx,twsouthwick/corefx,nbarbettini/corefx,Ermiar/corefx,Priya91/corefx-1,Petermarcu/corefx,ravimeda/corefx,tstringer/corefx,dotnet-bot/corefx,dhoehna/corefx,marksmeltzer/corefx,axelheer/corefx,Ermiar/corefx,Ermiar/corefx,dotnet-bot/corefx,Petermarcu/corefx,jlin177/corefx,jlin177/corefx,alexperovich/corefx,axelheer/corefx,alexperovich/corefx,parjong/corefx,richlander/corefx,elijah6/corefx,Chrisboh/corefx,DnlHarvey/corefx,nchikanov/corefx,rahku/corefx,Priya91/corefx-1,rjxby/corefx,parjong/corefx,yizhang82/corefx,alexperovich/corefx,mazong1123/corefx,Jiayili1/corefx,lggomez/corefx,nbarbettini/corefx,krytarowski/corefx,tstringer/corefx,wtgodbe/corefx,DnlHarvey/corefx,elijah6/corefx,richlander/corefx,nchikanov/corefx,adamralph/corefx,alexperovich/corefx,dhoehna/corefx,cartermp/corefx,Priya91/corefx-1,axelheer/corefx,marksmeltzer/corefx,khdang/corefx,ravimeda/corefx,YoupHulsebos/corefx,shimingsg/corefx,wtgodbe/corefx,cydhaselton/corefx,ravimeda/corefx,nbarbettini/corefx,manu-silicon/corefx,mazong1123/corefx,twsouthwick/corefx,jhendrixMSFT/corefx,nchikanov/corefx,seanshpark/corefx,ellismg/corefx,ViktorHofer/corefx,billwert/corefx,weltkante/corefx,dotnet-bot/corefx,gkhanna79/corefx,gkhanna79/corefx,ptoonen/corefx,yizhang82/corefx,nchikanov/corefx,cydhaselton/corefx,Chrisboh/corefx,seanshpark/corefx,iamjasonp/corefx,Petermarcu/corefx,krytarowski/corefx,stone-li/corefx,nbarbettini/corefx,rubo/corefx,marksmeltzer/corefx,mazong1123/corefx,weltkante/corefx,lggomez/corefx,ravimeda/corefx,dhoehna/corefx,khdang/corefx,rubo/corefx,Ermiar/corefx,stone-li/corefx,Jiayili1/corefx,JosephTremoulet/corefx,rjxby/corefx,nchikanov/corefx,wtgodbe/corefx,ptoonen/corefx,krytarowski/corefx,stephenmichaelf/corefx,JosephTremoulet/corefx,ptoonen/corefx,zhenlan/corefx,mazong1123/corefx,tijoytom/corefx,tijoytom/corefx,cydhaselton/corefx,richlander/corefx,Jiayili1/corefx,elijah6/corefx,DnlHarvey/corefx,Petermarcu/corefx,dotnet-bot/corefx,ericstj/corefx,twsouthwick/corefx,alphonsekurian/corefx,krk/corefx,richlander/corefx,elijah6/corefx,rahku/corefx,shmao/corefx,twsouthwick/corefx,tstringer/corefx,DnlHarvey/corefx,manu-silicon/corefx,jlin177/corefx,weltkante/corefx,stone-li/corefx,YoupHulsebos/corefx,khdang/corefx,mmitche/corefx,ViktorHofer/corefx,dhoehna/corefx,parjong/corefx,iamjasonp/corefx,parjong/corefx,wtgodbe/corefx,shimingsg/corefx,stephenmichaelf/corefx,zhenlan/corefx,fgreinacher/corefx,weltkante/corefx,billwert/corefx,elijah6/corefx,manu-silicon/corefx,ViktorHofer/corefx,the-dwyer/corefx,fgreinacher/corefx,cydhaselton/corefx,cartermp/corefx,dotnet-bot/corefx,ravimeda/corefx,yizhang82/corefx,JosephTremoulet/corefx,axelheer/corefx,ericstj/corefx,billwert/corefx,gkhanna79/corefx,weltkante/corefx,rjxby/corefx,mmitche/corefx,Ermiar/corefx,YoupHulsebos/corefx,MaggieTsang/corefx,Petermarcu/corefx,tijoytom/corefx,zhenlan/corefx,seanshpark/corefx,jhendrixMSFT/corefx,manu-silicon/corefx,rjxby/corefx,Ermiar/corefx,ViktorHofer/corefx,nbarbettini/corefx,rahku/corefx,manu-silicon/corefx,Ermiar/corefx,DnlHarvey/corefx,DnlHarvey/corefx,dhoehna/corefx,the-dwyer/corefx,Jiayili1/corefx,shmao/corefx,parjong/corefx,iamjasonp/corefx,YoupHulsebos/corefx,the-dwyer/corefx,dotnet-bot/corefx,JosephTremoulet/corefx,rahku/corefx,rjxby/corefx,shimingsg/corefx,Jiayili1/corefx,zhenlan/corefx,jhendrixMSFT/corefx,jlin177/corefx,jlin177/corefx,zhenlan/corefx,cydhaselton/corefx,khdang/corefx,Priya91/corefx-1,stone-li/corefx,krk/corefx,nchikanov/corefx,wtgodbe/corefx,ravimeda/corefx,mmitche/corefx,Chrisboh/corefx,ViktorHofer/corefx,mazong1123/corefx,adamralph/corefx,shimingsg/corefx,lggomez/corefx,shmao/corefx,ericstj/corefx,shmao/corefx,rubo/corefx,richlander/corefx,jhendrixMSFT/corefx,mmitche/corefx,BrennanConroy/corefx,mmitche/corefx,axelheer/corefx,axelheer/corefx,billwert/corefx,ellismg/corefx,twsouthwick/corefx,iamjasonp/corefx,tijoytom/corefx,ericstj/corefx,alphonsekurian/corefx,tijoytom/corefx,gkhanna79/corefx,weltkante/corefx,billwert/corefx,tstringer/corefx,BrennanConroy/corefx,dsplaisted/corefx,krk/corefx,yizhang82/corefx,Priya91/corefx-1,manu-silicon/corefx,cartermp/corefx,iamjasonp/corefx,elijah6/corefx,gkhanna79/corefx,stone-li/corefx,rjxby/corefx,Jiayili1/corefx,ellismg/corefx,ViktorHofer/corefx,krk/corefx,stone-li/corefx,Petermarcu/corefx,tijoytom/corefx,lggomez/corefx,JosephTremoulet/corefx,weltkante/corefx,Petermarcu/corefx,nchikanov/corefx,nbarbettini/corefx,parjong/corefx,seanshpark/corefx,richlander/corefx,jlin177/corefx,stephenmichaelf/corefx,marksmeltzer/corefx,alexperovich/corefx,shimingsg/corefx,zhenlan/corefx,ptoonen/corefx,alphonsekurian/corefx,fgreinacher/corefx,the-dwyer/corefx,alphonsekurian/corefx,ellismg/corefx,marksmeltzer/corefx,mazong1123/corefx,MaggieTsang/corefx,rubo/corefx,krytarowski/corefx,MaggieTsang/corefx,ellismg/corefx,alphonsekurian/corefx,twsouthwick/corefx,manu-silicon/corefx,shmao/corefx,jhendrixMSFT/corefx,jlin177/corefx,shmao/corefx,jhendrixMSFT/corefx,MaggieTsang/corefx,mmitche/corefx,MaggieTsang/corefx,stone-li/corefx,ericstj/corefx,Chrisboh/corefx,cydhaselton/corefx,YoupHulsebos/corefx,krytarowski/corefx,marksmeltzer/corefx,nbarbettini/corefx