[svn r103] Discovered some cases that could cause coroutine pools to leak coroutines.  Added a try/finally to catch and fix these.
[svn r103] Discovered some cases that could cause coroutine pools to leak coroutines.  Added a try/finally to catch and fix these.

lindenlab/eventlet,lindenlab/eventlet,collinstocks/eventlet,tempbottle/eventlet,lindenlab/eventlet,tempbottle/eventlet,collinstocks/eventlet