* plugins/gtk+/Makefile.am, plugins/gtk+/glade-cell-renderer-editor.c:
	Added a new editor for cell renderers

	* plugins/gtk+/gtk+.xml.in, plugins/gtk+/glade-gtk.c: Added metadata for
	all attributes and auxilary properties in the catalog, and added hooks
	to manipulate, load and save cell renderers, reused most of Juan Pablo's
	work for this, and also for treeview column child renderer support.


svn path=/trunk/; revision=2034