Pick a default toolchain with $NACL_GLIBC. Review URL: http://codereview.chromium.org/8037048
Pick a default toolchain with $NACL_GLIBC.
Review URL: http://codereview.chromium.org/8037048

git-svn-id: 84b3587ce119b778414dcb50e18b7479aacf4f1d@442 7dad1e8b-422e-d2af-fbf5-8013b78bd812

adlr/naclports,yeyus/naclports,yeyus/naclports,adlr/naclports,kosyak/naclports_samsung-smart-tv,dtkav/naclports,yeyus/naclports,Schibum/naclports,Schibum/naclports,adlr/naclports,Schibum/naclports,clchiou/naclports,Schibum/naclports,yeyus/naclports,binji/naclports,adlr/naclports,binji/naclports,binji/naclports,binji/naclports,kuscsik/naclports,kosyak/naclports_samsung-smart-tv,kuscsik/naclports,kosyak/naclports_samsung-smart-tv,kuscsik/naclports,clchiou/naclports,clchiou/naclports,kosyak/naclports_samsung-smart-tv,dtkav/naclports,clchiou/naclports,binji/naclports,yeyus/naclports,dtkav/naclports,Schibum/naclports,kosyak/naclports_samsung-smart-tv,dtkav/naclports,yeyus/naclports,dtkav/naclports,adlr/naclports,kuscsik/naclports,kuscsik/naclports,clchiou/naclports,Schibum/naclports