Bug 875512 - Part 2: Followup mach bustage; r=me
Bug 873720 - Part 1: Annotate build output with machine readable markers; r=ted
Bug 873720 - Part 2: Move mach's build monitoring logic into mozbuild core; r=ted
Bug 873720 - Part 3: Track build state in build monitor; r=ted
Bug 873720 - Part 4: Display a build progress indicator; r=ted
Bug 873720 - Part 5: Only call into subtiers that perform work; r=ted
Bug 868300, use cycle collector to break the cycles between ValidityState and its owner, r=mounir

--HG--
extra : rebase_source : 7ae7d0cfdca60d71870ac7b9d7a1210c9e1f6ec3