Merge branch 'stable-2.10'

* stable-2.10:
  Update 2.10 release notes
  Update 2.10 release notes
  Update JGit to 3.6.2.201501210735-r
  Fix plugin reloading for DynamicItems

Conflicts:
	lib/jgit/BUCK

Change-Id: Icb75957ea9cf17684b6c8dd069499251c92d700d