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.
Regenerate clutter-gtk_signals.defs
Embed: Wrap "use-layout-size" property

	clutter-gtk/src/embed.hg: Add "use-layout-size" property.
Wrap GtkClutterActor

	* clutter-gtk/src/actor.[ccg|hg]: New files.
	* clutter-gtk/src/filelist.am: Add actor.hg to files_hg.
Wrap GtkClutterWindow

	* configure.ac: Search for gtkmm-3.0 m4 directory path.
	* clutter-gtk/src/Makefile.am: Include search path for class_gtkobject.m4.
	* codegen/m4/convert.m4: Include class_gtkobject.m4.
	* clutter-gtk/src/filelist.am: Add window.hg.
	* clutter-gtk/src/window.[ccg|hg]: New files.
Embed: Wrap get/set_use_layout_size() methods

	* clutter-gtk/src/clutter-gtk_methods.defs: Define get/set_use_layout_size() methods.
	* clutter-gtk/src/embed.hg: Wrap get/set_use_layout_size() methods.
Embed: Wrap Embed with _CLASS_GTKOBJECT

	* clutter-gtk/src/embed.hg: Replace _CLASS_GOBJECT with _CLASS_GTKOBJECT.