2008-10-12  Michael Natterer  <mitch@gimp.org>

	* app/gegl/gimpoperationpointcomposer.[ch]: renamed this class...

	* app/gegl/gimpoperationlayermode.[ch]: ...to this and add
	an own process() virtual function so we are free to hack even
	more badly in order to support legacy layer modes and proper
	ones which do meningfiul things to alpha. Simply redirect
	GeglOperationPointComposer's compose() calls to our own vfunc
	for now.

	* app/gegl/gegl-types.h
	* app/gegl/Makefile.am: changed accordingly.

	* app/gegl/gimpoperation*mode.[ch]: changed parent class and
	implemented process() method accordingly.


svn path=/trunk/; revision=27251