Merge pull request #13 from choppsv1/allkeytypes

Add generic key loading function to try all types.

Import sys

Merge branch 'master' of github.com:choppsv1/pysshutil

Merge pull request #11 from PierluigiGreto/fix_address_family

handle OSError errno 97 when ipv6 is disabled

Update travis config

Check for socket closed right after accept.

- This catches "nc" probes to see if a port is available. This normally
  causes a non-obvious error about SSH banner failure which normally has
  to do with bad permissions. All around confusing.

don't timeout closed cached sockets, close immediately.

- Split authentication failures catches by type.

Deal with any exception during accept in server.

Try and get travis deploy working.

Correct return value for allowed auths.