2004-10-04  Michael Natterer  <mitch@gimp.org>

	* tools/pdbgen/pdb/brush.pdb
	* tools/pdbgen/pdb/gradient.pdb
	* tools/pdbgen/pdb/palette.pdb: disallow the empty string for
	new brushes, gradients and palettes and check the return value
	of gimp_data_factory_data_new(). Cleanup.

	* app/core/gimpbrushgenerated.c (gimp_brush_generated_new)
	* app/core/gimpgradient.c (gimp_gradient_new)
	* app/core/gimpdatafactory.c (gimp_data_factory_data_new): same
	here. Fixes bug #154264.

	* app/core/gimpdata.[ch] (gimp_data_set_filename): added boolean
	"deletable" parameter because it's not derivable from "writable".

	* app/core/gimpdatafactory.c (gimp_data_factory_load_data): need
	to figure "deletable" separately from "writable" to be able to
	delete unsavable stuff in the user-writable data directories.
	Fixes bug #154410.

	(gimp_data_factory_data_save_single): cleaned up.

	* app/pdb/brush_cmds.c
	* app/pdb/gradient_cmds.c
	* app/pdb/palette_cmds.c
	* libgimp/gimpbrush_pdb.c
	* libgimp/gimpgradient_pdb.c
	* libgimp/gimppalette_pdb.c: regenerated.