Rename from blit_inside_window(), as it now does blitting inside a bitmap,

Rename from blit_inside_window(), as it now does blitting inside a bitmap,

2005-07-29  Tor Lillqvist  <tml@novell.com>

	* gdk/win32/gdkdrawable-win32.c (blit_inside_drawable): Rename
	from blit_inside_window(), as it now does blitting inside a
	bitmap, too. No code change, still just call BitBlt().
	(_gdk_win32_blit): Check for source equalling destination
	first. (#169508, #131977)
	Do away with the superfluous local draw_impl variable, the
	parameter to this function is already a GdkDrawableImplWin32*, no
	need to copy and cast it.