[gflags] Remove check()
Merge branch 'master' of github.com:chenxiaolong/UnityNext-for-Arch
[liburcu] Remove check()
[lttng-ust] Update to version 2.3.0
[umockdev] Update to version 0.5
[mir-bzr] Build fix
Merge branch 'master' into tracker-unity-system-compositor-bzr
[unity-system-compositor-bzr] Jenkins autocommit: (job: UNFA-4.0-Track-unity-system-compositor-bzr; build no.: 76)