more debug routines

Sketch.py

@@ -52,3 +52,5 @@ class Sketch(object):
         for i in range(len(solved_vars)):
             varid_to_shape_var[i][0].setVar(varid_to_shape_var[i][1],
                     solved_vars[i])
+#        for s in self.shapes:
+#            print 'shape:', repr(s.vars)