* edje: Add a cache for _edje_part_recalc_single.

	* edje: Add a cache for _edje_part_recalc_single.

	WARNING: THIS CAN CAUSE RENDERING GLITCH AND OTHER WEIRD BEHAVIOUR WITH
	YOUR EDJE FILE. PLEASE REPORT ANY ALIEN STUFF.

	Note: This patch cache the result of _edje_part_recalc_single, until
	any relative part are moved, the object is resized or some property
	are changed (like during text set or color class set).

	Note: Be carefull when you call edje_object_size_min_restricted_calc,
	it's really an inderect heavy user of _edje_part_recalc_single and
	I wasn't able to bring it down.

	Note: This patch use more RAM, around 480 bytes per Edje state, so I
	don't recommand using it on a Desktop with a lot of CPU power.

git-svn-id: svn+ssh://svn.enlightenment.org/var/svn/e/trunk/edje@41663 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33