Merge branch 'stable-2.8' into stable-2.9

* stable-2.8:
  Release notes for Gerrit 2.8.6.1
  Remove reference to MyISAM from database setup documentation
  Update version to 2.8.6.1
  Upgrade gwtorm to 1.7.3

Conflicts:
	VERSION
	gerrit-plugin-archetype/pom.xml
	gerrit-plugin-gwt-archetype/pom.xml
	gerrit-plugin-gwtui/pom.xml
	gerrit-plugin-js-archetype/pom.xml
	lib/BUCK

Change-Id: Ic5046ad7a73aeb67313bfe8b6af1bda42d6723c9