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/idlelib/configHelpSourceEdit.py

@@ -164,6 +164,6 @@ if __name__ == '__main__':
     def run():
         keySeq = ''
         dlg = GetHelpSourceDialog(root, 'Get Help Source')
-        print dlg.result
+        print(dlg.result)
     Button(root,text='Dialog', command=run).pack()
     root.mainloop()