2002-05-29  Sven Neumann  <sven@gimp.org>

	* libgimpwidgets/gimpwidgets.[ch]: renamed gimp_mem_size_entry_new()
	to gimp_memsize_entry_new() for consistency. Rewrote using bitshifts.
	Should work correctly for sizeof (gulong) > 32 now. Added new unit
	GigaBytes.

	* app/gui/preferences-dialog.c
	* app/gui/user-install-dialog.c: changed accordingly.

	* app/config/gimpconfig-types.[ch]: added new function
	gimp_memsize_set_from_string() that allows to check if the
	conversion succeeded.

	* app/config/gimpconfig-deserialize.c
	(gimp_config_deserialize_memsize): use gimp_memsize_set_from_string().