[PATCH] rlm_python fixes

[Paul P Komkoff Jr]

Replying to Alan DeKok:
>   The main problem I have with your patch is that I can't tell what's
> changed.  You've mixed up re-formatting, re-arrangement, and new code
> all in the same patch.

Well...

1. Changed the way rlm_python_t is declared (more common to C
   applications)
2. Added WITH_THREAD_POOL and corresponding ifdefs, which wrap
python_start_thread, destroy thread and some python thread support
function calls - to allow threaded operation.

(I think some of this code can be optimised away by using 2.3+
PyGILState_Ensure function but this can be marked as TODO after
initial work will be accepted)

3. Added a lot of Py_XDECREFs and a smaller number of INCREFs where
needed

4. Added error handling where it's marked as TODO in original module.

-- 
Paul P 'Stingray' Komkoff Jr // http://stingr.net/key <- my pgp key
 This message represents the official view of the voices in my head