GUI can create silk screen objects.

- made xpm name manipulation compatible with older versions of ImageMagick
  (reported by Alvaro Lopes)
- corrected all lines beginning with five or more spaces
- Makefile
- README: fixed loop example (reported by Joerg Reisenweber)
- moved draw_arc and draw_circle from gui_inst.c to gui_util.c
- added dragging and hovering
- added creation of lines, rectangles, and arcs via GUI
- removed arc tool (use circle instead)
- fixed reference counting in vectors



git-svn-id: http://svn.openmoko.org/trunk/eda/fped@5384 99fdad57-331a-0410-800a-d7fa5415bdb3

obj.h

@@ -172,6 +172,14 @@ extern struct frame *root_frame;
 extern struct frame *active_frame;
 
 
+static inline struct vec *get_vec(struct vec *vec)
+{
+	if (vec)
+		vec->n_refs++;
+	return vec;
+}
+
+
 int instantiate(void);
 
 #endif /* !OBJ_H */