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/WidgetRedirector.py

@@ -83,7 +83,7 @@ def main():
     redir = WidgetRedirector(text)
     global orig_insert
     def my_insert(*args):
-        print "insert", args
+        print("insert", args)
         orig_insert(*args)
     orig_insert = redir.register("insert", my_insert)
     root.mainloop()