I've done some minor updates to the instructions for working with gcc-linaro, bzr, and merge requests at: https://wiki.linaro.org/WorkingGroups/ToolChain/BzrTips
The interesting changes are using: * bzr commit --fixes=lp:nnnn to link a branch to a bug number * bzr branch --hardlink to cut down on branch time and disk usage * bzr-merge-changelog to automatically merge ChangeLog.linaro
-- Michael