--HG--
rename : greentest/test__evdns.py => greentest/test__dns.py

Fixed bug in socket.accept(): for sockets with timeout==0.0 it would return unwrapped _socket.socket instance

monkey: fix patch_socket() to expect that ssl may not be present in socket module; also patch sslerror too

- add sslerror to __all__

- rename GreenSSL to SSLObject
- remove is_secure attribute
- add __getattr__ since base class no longer has it
- clear exc_info before switching
- accept() now uses socket.accept()