2004-05-04  Sven Neumann  <sven@gimp.org>

	* app/gui/preferences-dialog.c
	* app/widgets/widgets-enums.[ch]
	* app/widgets/gimpwidgets-utils.c (gimp_window_set_hint): added
	new window hint "keep-above" to force toolbox and/or dock windows
	to be kept above (if the WM supports this hint). Fixes bug #131672.