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/lib-tk/Dialog.py

@@ -36,7 +36,7 @@ def _test():
                       'strings': ('Save File',
                                   'Discard Changes',
                                   'Return to Editor')})
-    print d.num
+    print(d.num)
 
 
 if __name__ == '__main__':