[C++-SIG] py_cpp update posted

[David Abrahams]

See http://people.ne.mediaone.net/abrahams/downloads/py_cpp.html.

New features:
1. support for non-const reference parameters to constructors
2. support for special member attributes __doc__, __class__, __bases__, etc.
3. support for multiple inheritance from py_cpp extension classes and
regular python classes.

Updated documentation (whew, this takes a long time - there's much more to
come. If you need advanced hints earlier, see the todo.txt file in the
distribution).

-Dave

More documentation and massage of names/namespaces to conform with boost
standards is next.