- delete.c: added more destructor functions

- deallocate all our data structures on exit (to help find memory leaks, bad
  pointers, and general logic errors)
- fixed memory leak when allocating pad names in instantiation
- added "magic" environment variable FPED_NO_GUI to run fped without 
  initializing Gtk+
- added valgrind wrapper "leakcheck"
- delete.c: destroy() now requires a deletion to exist
- vacate_op: free string expressions
- destroy_obj: free measurement labels
- delete_references: use do_delete_obj so the we don't bump the group number
- delete_frame: delete references after deleting the frame itself, so they end
  up on the stack above the frame and get destroyed first
- do_delete_vec: like above, even though it doesn't matter here



git-svn-id: http://svn.openmoko.org/trunk/eda/fped@5506 99fdad57-331a-0410-800a-d7fa5415bdb3

inst.c

@@ -956,6 +956,18 @@ struct bbox inst_get_bbox(void)
 }
 
 
+static void cleanup_inst(enum inst_prio prio, const struct inst *inst)
+{
+	switch (prio) {
+	case ip_pad:
+		free(inst->u.pad.name);
+		break;
+	default:
+		break;
+	}
+}
+
+
 static void free_pkgs(struct pkg *pkg)
 {
 	enum inst_prio prio;
@@ -967,6 +979,7 @@ static void free_pkgs(struct pkg *pkg)
 		FOR_INST_PRIOS_UP(prio)
 			for (inst = pkg->insts[prio]; inst; inst = next) {
 				next = inst->next;
+				cleanup_inst(prio, inst);
 				free(inst);
 			}
 		reset_samples(pkg->samples, pkg->n_samples);