The partial order algorithm in dump.c sometimes dumped objects before a vector

they referenced. As a band-aid, we now explicitly keep track of which vectors 
have been dumped, and defer objects accordingly. A more correct solution would
be to properly abstract the partial order algorithms (along with the heuristics
for maximizing the number of ".") and to implement it properly.

- fpd.y (debug_item): new rule for %dump and %exit, which can appear also among
  measurements
- fpd.y (frame_items, measurements):  rearranged grammar to allow debug_item
  also in measurements. To avoid ambiguities, the "measurements" section can no
  longer be empty, but it can be omitted as a whole.
- obj.h, dump.c (later, recurse_vec, order_frame): vectors now also have a
  "dumped" flag which is used in "later" to defer dumping an object until all
  the vectors it depends on have been dumped.



git-svn-id: http://svn.openmoko.org/trunk/eda/fped@5928 99fdad57-331a-0410-800a-d7fa5415bdb3

obj.h

@@ -142,6 +142,9 @@ struct vec {
 	/* for re-ordering after a move */
 	int mark;
 
+	/* for dumping */
+	int dumped;
+
 	/* for the GUI */
 	GtkWidget *list_widget; /* NULL if items aren't shown */
 };