2005-09-25  Sven Neumann  <sven@gimp.org>

	* libgimpwidgets/gimpwidgets.def
	* libgimpwidgets/gimpzoommodel.[ch]: added gimp_zoom_model_zoom()
	and changed gimp_zoom_model_get_fraction() to take a model instead
	of the zoom factor.

	* app/display/gimpdisplayshell.[ch]: use a GimpZoomModel for the
	display scale factor.

	* app/actions/image-commands.c
	* app/actions/view-actions.c
	* app/actions/view-commands.c
	* app/display/gimpdisplayshell-callbacks.c
	* app/display/gimpdisplayshell-scale.c
	* app/display/gimpdisplayshell-title.c
	* app/display/gimpnavigationeditor.c
	* app/display/gimpstatusbar.c
	* app/tools/gimpeditselectiontool.c
	* app/tools/gimpmagnifytool.c: changed accordingly.