- Ensured that strings going to stdout go through an encode/decode phase,

- Ensured that strings going to stdout go through an encode/decode phase,
so that any non-ASCII characters get to the output stream correctly
in both Py2k and Py3k.   Also added source encoding detection using
Mako's parse_encoding() routine in Py2k so that the __doc__ of a
non-ascii revision file can be treated as unicode in Py2k.