1.90.9
Auto-generate the ChangeLog from the git log for 'make dist'.

	* Makefile.am: Include the dist-changelog.am file copied in build/
	from mm-common so that the ChangeLog is automatically generated from
	the git commit messages on 'make dist'.
Move to a generated ChangeLog.
Remove ItemSimple::get_bounds()

* goocanvas/src/itemsimple.hg: ItemSimple::get_bounds() overrides
Item::get_bounds(), which it shouldn't do. Remove ItemSimple::get_bounds().
Bug #721627.