Define extern char** environ so that configuration work compiles on Mac
Define extern char** environ so that configuration work compiles on Mac

git-svn-id: 03d7800a49d8905ef4fbcc296184319e19243493@1131842 13f79535-47bb-0310-9956-ffa450edef68

verizonlabs/mesos,jpeach/mesos,gsantovena/mesos,yuquanshan/customizedMesos,verizonlabs/mesos,woggle/mesos-old,Aman-Jain-14/customizedMesos,enachb/mesos,reneploetz/mesos,Gilbert88/mesos,pwendell/mesos,samwhitlock/mesos-monitoring,dforsyth/mesos,wickman/mesos,jpeach/mesos,enachb/mesos,kaysoky/mesos,craimbert/mesos,verizonlabs/mesos,Gilbert88/mesos,zmalik/mesos,enachb/mesos,Gilbert88/mesos,dforsyth/mesos,neilconway/mesos,kaysoky/mesos,Aman-Jain-14/customizedMesos,jpeach/mesos,woggle/mesos-old,neilconway/mesos,asamerh4/mesos,zmalik/mesos,Gilbert88/mesos,reneploetz/mesos,jpeach/mesos,pwendell/mesos,jpeach/mesos,chhsia0/mesos,yuquanshan/customizedMesos,Gilbert88/mesos,kaysoky/mesos,neilconway/mesos,charlescearl/VirtualMesos,andschwa/mesos,Aman-Jain-14/customizedMesos,asamerh4/mesos,abudnik/mesos,Gilbert88/mesos,woggle/mesos-old,asamerh4/mesos,chhsia0/mesos,andschwa/mesos,neilconway/mesos,craimbert/mesos,Gilbert88/mesos,Aman-Jain-14/customizedMesos,verizonlabs/mesos,gsantovena/mesos,craimbert/mesos,gsantovena/mesos,verizonlabs/mesos,Aman-Jain-14/customizedMesos,pwendell/mesos,wickman/mesos,dforsyth/mesos,reneploetz/mesos,asamerh4/mesos,andschwa/mesos,pwendell/mesos,jpeach/mesos,samwhitlock/mesos-monitoring,verizonlabs/mesos,pwendell/mesos,zmalik/mesos,zmalik/mesos,neilconway/mesos,gsantovena/mesos,dforsyth/mesos,samwhitlock/mesos-monitoring,zmalik/mesos,craimbert/mesos,chhsia0/mesos,yuquanshan/customizedMesos,wickman/mesos,gsantovena/mesos,Aman-Jain-14/customizedMesos,asamerh4/mesos,craimbert/mesos,abudnik/mesos,abudnik/mesos,charlescearl/VirtualMesos,reneploetz/mesos,charlescearl/VirtualMesos,woggle/mesos-old,woggle/mesos-old,reneploetz/mesos,yuquanshan/customizedMesos,dforsyth/mesos,craimbert/mesos,andschwa/mesos,wickman/mesos,enachb/mesos,zmalik/mesos,wickman/mesos,woggle/mesos-old,pwendell/mesos,reneploetz/mesos,abudnik/mesos,kaysoky/mesos,enachb/mesos,chhsia0/mesos,woggle/mesos-old,neilconway/mesos,charlescearl/VirtualMesos,dforsyth/mesos,enachb/mesos,charlescearl/VirtualMesos,pwendell/mesos,charlescearl/VirtualMesos,Aman-Jain-14/customizedMesos,chhsia0/mesos,pwendell/mesos,wickman/mesos,dforsyth/mesos,jpeach/mesos,yuquanshan/customizedMesos,samwhitlock/mesos-monitoring,andschwa/mesos,yuquanshan/customizedMesos,verizonlabs/mesos,asamerh4/mesos,pwendell/mesos,charlescearl/VirtualMesos,charlescearl/VirtualMesos,gsantovena/mesos,wickman/mesos,samwhitlock/mesos-monitoring,woggle/mesos-old,gsantovena/mesos,yuquanshan/customizedMesos,kaysoky/mesos,chhsia0/mesos,abudnik/mesos,kaysoky/mesos,kaysoky/mesos,samwhitlock/mesos-monitoring,zmalik/mesos,neilconway/mesos,chhsia0/mesos,reneploetz/mesos,asamerh4/mesos,abudnik/mesos,abudnik/mesos,andschwa/mesos,enachb/mesos,woggle/mesos-old,andschwa/mesos,charlescearl/VirtualMesos,craimbert/mesos