pyst: Python for Asterisk

Hello,

I'm not sure if this project is still maintained, but I made some
modifications to the source that some may be useful. To the AGI class
variables, I changed the retrieval method from using the env dictionary to
having variables directly access the passed value.

e.g. Instead of using

var = agi.env['agi_request']

it now uses:

var = agi.request

I found this to be much simpler.

I also added the environment variables as class variables.

e.g. the following would yield '/etc/asterisk'

agi.CONFIG_DIR



Let me know what you think