Bug 861733 - Clean up old release dirs on slaves. r=catlee
Bug 883498 - Simplify spidermonkey build objects by using branch configuration directly and handling multiple variants, r=rail

--HG--
extra : rebase_source : 4caefae8ffa91815d84be0cb4a650d1b65329d17
Bug 887886 - Bug 829211 turned many 1200 seconds timeouts into 3600 second timeouts r=aki
Bug 848082: Speed up getLastBuiltRevision r=nthomas
Bug 869749: import change files in chunks r=nthomas
Bug 848082: Properly escape parameters for mysql. r=bhearsum
Backout 86a41c139bad (Bug 883498)