2006-04-07  Sven Neumann  <sven@gimp.org>

	* app/core/gimpimage-merge.[ch] (gimp_image_merge_visible_layers):
	allow to discard invisible layers as suggested in bug #337557.

	* app/actions/image-commands.c
	* app/dialogs/image-merge-layers-dialog.[ch]: added a check button
	to the Merge Visible Layers dialog to control the new feature.

	* app/file/file-open.c
	* tools/pdbgen/pdb/image.pdb: pass FALSE for the new parameter.

	* app/pdb/image_cmds.c: regenerated.