bug 1014287 - we no longer need gaia bumper. r=catlee

--HG--
extra : rebase_source : aaac90883412ef4d9c410fbad65898c9bcc3b340
bug 1014287 - kill b2g26. r=hwine

--HG--
extra : rebase_source : b26350e49ba930416f80b0cc26ec77a8e6ab756e
bug 987980 - aurora b2g configs. r=catlee

--HG--
rename : configs/b2g_bumper/master.py => configs/b2g_bumper/v2.0.py
extra : rebase_source : aa60532800e823562843c9ec20071b49e54da548
bug 987980 - bump gecko.git vcs-sync versions. r=hwine

--HG--
extra : rebase_source : eb64413dc366f0b78159153016e8331df74d77cd