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/SimpleDialog.py

@@ -102,7 +102,7 @@ if __name__ == '__main__':
                          default=0,
                          cancel=2,
                          title="Test Dialog")
-            print d.go()
+            print(d.go())
         t = Button(root, text='Test', command=doit)
         t.pack()
         q = Button(root, text='Quit', command=t.quit)