Freyja 'Chimera' branch update

[mong...@icculus.org]

Looks like python will be used for interactive plugins.

1. Python has gtk+ and OpenGL support
2. Easy and quick to develop in python
3. No need to compile and it's completely portable

Last week python support was backported to Chimera build's model plugin
system. Check out the demo.py and import.py under
libfreyja/plugins/models/. Currently import.py is hardcoded to be
checked for model imports, so you can begin testing with this template.
When I finish up the python model plugin, I'll put in glue to control
a group of system and user level plugins in python like the current
plugins.
Send in any comments or bugs you find. Otherwise how can I know?