2000-03-26  Michael Natterer  <mitch@gimp.org>

	* app/gimage_mask.[ch] (gimage_mask_extract): add an "add_alpha"
	parameter to allow selected regions to be extracted without having
	an alpha channel added.

	* app/global_edit.c: pass add_alpha = TRUE.

	* app/transform_core.[ch]: made the transform core work on
	non-layer drawables even if no selection is present. Fixes #7485
	and #7555.

	- transform_core_cut(): extract the mask without alpha if
	  operating on a non-layer without having a selection.
	- transform_core_paste(): return a boolean indicating success
	  instead of a layer and handle channels correctly.
	- transform_core_do(): if the "floating_tiles" passed to the
	  function are from an un-floated non-layer, treat the whole
	  non-layer as alpha channel and never enter the loop which
	  transforms the (not present) color channels.
	  Also clip the result to ensure that the channel never grows
	  larger then the image.

	* app/tools_cmds.c
	* tools/pdbgen/pdb/tools.pdb: transform_core_paste() returns a
	gboolean now.