2.5

F6 menu "redo last operation" now works, mostly :)

Try it in editmode on add-UV-Sphere, or Subdivide, those work
fine. Transform ops have some feedback issues or so.

This is a temporary commit; brecht will take this further with
nice code (event system doesn't make menus as active region
but sets the original context instead, as stored in ui handler.)

source/blender/editors/interface/interface_regions.c

@@ -635,6 +635,10 @@ uiPopupBlockHandle *ui_popup_block_create(bContext *C, ARegion *butregion, uiBut
 	/* create handle */
 	handle= MEM_callocN(sizeof(uiPopupBlockHandle), "uiPopupBlockHandle");
 
+	/* store context for operator */
+	handle->ctx_area= CTX_wm_area(C);
+	handle->ctx_region= CTX_wm_region(C);
+	
 	/* create area region */
 	ar= ui_add_temporary_region(CTX_wm_screen(C));