2006-11-23  Simon Budig  <simon@gimp.org>

	Fixing include/declaration issues in the application:

	* app/composite/gimp-composite-sse2.c: disable unused debugging code

	* app/paint-funcs/paint-funcs.[ch]
	* app/paint-funcs/scale-funcs.[ch]: fix include files, add some
	prototypes, make some other functions static.

	* app/core/gimpbuffer.c
	* app/core/gimpdrawable-preview.c: changed accordingly.

	* app/tools/gimpeditselectiontool.[ch]: untangle .c and .h file.

	* app/widgets/gimpfiledialog.c: add missing #include.