2008-08-24  Sven Neumann  <sven@gimp.org>

	* app/paint-funcs/scale-region.c (determine_scale): avoid
	unnecessary scaling when scaling factor is 2^n.
	(pixel_average): replaced with optimized pixel averager from
	tile-pyramid.c (from the gimp-2-4 branch with some minor
	corrections).


svn path=/trunk/; revision=26731