Fix most trivially-findable print statements.

There's one major and one minor category still unfixed:
doctests are the major category (and I hope to be able to augment the
refactoring tool to refactor bona fide doctests soon);
other code generating print statements in strings is the minor category.

(Oh, and I don't know if the compiler package works.)

Lib/test/test_defaultdict.py

@@ -81,8 +81,8 @@ class TestDefaultDict(unittest.TestCase):
         try:
             f = open(tfn, "w+")
             try:
-                print >>f, d1
-                print >>f, d2
+                print(d1, file=f)
+                print(d2, file=f)
                 f.seek(0)
                 self.assertEqual(f.readline(), repr(d1) + "\n")
                 self.assertEqual(f.readline(), repr(d2) + "\n")