Rewind to rogentos-artwork-core

new file:   x11-themes/kogaion-artwork-gnome/kogaion-artwork-gnome-1.0-r1.ebuild
	- dependency changed to rogentos-artwok-core

new file:   x11-themes/rogentos-artwork-core/rogentos-artwork-core-2.ebuild
	- src upgraded to ver. 2
	- added backdrop functionality for Xfce

modified:   x11-themes/rogentos-artwork-core/Manifest
modified:   x11-themes/kogaion-artwork-gnome/Manifest
modified:   eclass/rogentos-artwork.eclass
	- fixed fbsplash path detection (maybe)