Bug 846409 - Add |mach mach-debug-commands|; r=jhammel
Bug 853225 - Fix the mach usage line for subcommands [r=gps]
Bug 854058: Fix typo in mach error message: s/occured/occurred/. r=gps DONTBUILD
Bug 841445 - Make 'mach help <command>' call print_help directly [r=gps]
Bug 857984 - mach mochitest now colorizes and prints failure summary; r=Ms2ger