* tools/pdbgen/pdb/gradient.pdb: added gradient-is-editable

	* tools/pdbgen/pdb/brush.pdb
	* tools/pdbgen/pdb/palette.pdb: changed mitch_misc to bill_misc
	where correct.

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