Thrift for Symfony 2 (dev version)

Hi,

In order to use Thrift with the Framework Symfony 2 and its great ClassLoader, I have:
- namespaced your PHP Lib (phpsf2)
- added an option sf2 to the PHP compiler. The main differences, are the use of namespace, and remove your autloader.

I have done this in the 0.8x branch (stable version in my other pull request) and in your trunk.

I use it with a Symfony bundle I create to have a cool integration in Symfony 2. Here is the git: git@github.com:ebuzzing/OverblogThriftBundle.git

Feel free to send me any question, any feedback on my pull request.

Best regards.

Xavier HAUSHERR
Overblog CTO
@xkobal