2006-04-02  Michael Natterer  <mitch@gimp.org>

	* tools/pdbgen/pdb.pl: added a const_type member to all PDB types,
	Removed casts from all get_value_funcs which return const
	pointers, they can stay const now.

	* tools/pdbgen/app.pl: use the const_type to declare input args.

	* app/pdb/gimpprocedure.h: pass const arguments to the internal
	marshallers.

	* app/xcf/xcf.c: changed accordingly.

	* tools/pdbgen/pdb/paint_tools.pdb
	* tools/pdbgen/pdb/paths.pdb: added some const qualifiers.

	* tools/pdbgen/lib.pl: use the const_type for input args instead
	of adding the const qualifier based on the type.

	* app/pdb/_cmds.c
	* libgimp/gimpparasite_pdb.[ch]: regenerated.

	Unrelated:

	* app/pdb/gimpargument.c (gimp_arguments_destroy): no need any
	more to destroy the argument array in reverse order (we don't need
	access to the previous element because arrays in GValues memory
	manage themselves now).