2.5

More notifier and redraw cleanup

- notifiers are not filtered anymore, apart from window/screen notifiers,
  they get to all regions.
- fixed drawing of 'action zones' in areas.
- added support for basic multilayer draw, like for action zones now,
  and future other area decorations (tabs, region handlers)
  check: ED_area_overdraw_flush()
         ED_area_overdraw()
- bugfix in UI redraw tags, it was calling region pointer in free'd
  data
- added notifier for marker-changed
- added keymap for markers to ipo window

source/blender/editors/include/ED_screen.h

@@ -54,11 +54,13 @@ void	ED_spacetypes_init(void);
 void	ED_spacetypes_keymap(struct wmWindowManager *wm);
 struct	ARegionType *ED_regiontype_from_id(struct SpaceType *st, int regionid);
 int		ED_area_header_standardbuttons(const bContext *C, struct uiBlock *block, int yco);
+void	ED_area_overdraw(struct bContext *C);
+void	ED_area_overdraw_flush(struct bContext *C);
+
 
 /* areas */
 void	ED_area_initialize(struct wmWindowManager *wm, struct wmWindow *win, struct ScrArea *sa);
 void	ED_area_exit(struct bContext *C, struct ScrArea *sa);
-void	ED_area_do_draw(struct bContext *C, struct ScrArea *sa);
 int		ED_screen_area_active(const struct bContext *C);
 void	ED_area_tag_redraw(ScrArea *sa);