Pybindgen

- Support reference counted C++ classes
- Generated code compiles with Python >= 2.3
(though Python >= 2.4 required for pybindgen itself)
- Memory leak fixes
- Add support for type transformations (for smart pointers)
- New option to prefix global declarations with a name
- Fix compilation warnings
- Add support for read-only access to C++ class attributes
(both instance and static attributes supported)
- Win32 build fixes
- Other bug fixes

- Supports methods and functions with parameters of a class
type (for classes being wrapped). Pass by pointer, value, or ref
supported, with in/out/inout directions, and transfer of ownership, as
well as value/pointer class return type. Reference counted classes
not yet supported.

- Supports wrapping classes, but not yet functions/methods
with class parameters;

- Supports basic types, modules, and functions;