changed (back) _refSurface from cairo_surface_t into Cairo::Surface.
changed (back) _refSurface from cairo_surface_t into Cairo::Surface.

Conflicts:

	src/oxygenstylehelper.h

KDE/oxygen-gtk,blueshell-next/carbon-gtk,blueshell-next/carbon-gtk,blue-shell/carbon-gtk,blue-shell/carbon-gtk,KDE/oxygen-gtk