Bug 971852 - Put gcc in both places it is looked for, r=aki
Bug 960201 - Add git support to gaia.json
Bug 969446 - Backout bug 957768 since it is now redundant, r=me
Bug 971852 - follow fix to check out gcc, not sixgill. r=aaaarryeeeeeuuurggh!

--HG--
extra : rebase_source : cac8b1038196c2a254b71bfe23b0a7b2c5b2773d
merge to production

--HG--
branch : production