[Twisted-Python] gthreadless.py

Hello twisted folks, I reimplemented gthreadless.py, originally implemented by Chris Armstrong. My implementation aims to be more robust and is currently used in a large project, therefore it is already usable. http://www.pragma2000.com/wiki/index.php?GThreadless gthreadless is a twisted module that makes use of greenlets to implement the very nice primitive blockOn(d), that suspends the execution in the current stack frame while waiting for the deferred to fire. This way you can use a synchronous blocking-style programming model while still using twisted, all nicely integrated. It's a great great thing. Give it a try. cheers, Stefano Masini