flup and python 2.6 support

[Etienne Robillard]

if you're having any problems (white screen, server not starting, etc)
using flup with python2.6 to deploy your wsgi app, try switching to
the python-fastcgi module as a workaround.

i switched to python-fascgi since flup was requiring me to use
wsgiref.validate.validator(),
which is undoubtly an optional middleware. so now i guess that flup
needs a few updates
to operate correctly with python 2.6.1, but in the meanwhile, python-
fastcgi is a very good
alternative to flup.