Disable epoll as it has caused more obscure issues then any of my previous...

Disable epoll as it has caused more obscure issues then any of my previous code. I will continue to work on it in a separate branch to make it stable for a release and test it against the following issues.
(closes issue #11253)
Reported by: falves11
(closes issue #11657)
Reported by: davevg
(closes issue #11033)
Reported by: falves11


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@104019 65c4cc65-6c06-0410-ace0-fbb531ad65f3