[sobjects] unicode → six.text_type

[server] fix unittest_security for py3k - use source.binary_to_str instead of str(), helps when the backend returns memoryviews - fixup str vs bytes

[py3k] make ldapfeed tests pass

[server] import filter from six.moves

[ldapfeed] port to ldap3 python-ldap has no python3 support. XXX I only checked that unittest_ldapfeed passes.

[server/test] str vs bytes

[server/test] list() around map and zip

[server/test] to fold, unicode → six.text_type

[server/test] delete test that doesn't make sense on python3 XXX if PY2?

[server/test] unicode → six.text_type

[server] unicode → six.text_type

[py3k] fix building rset description for INSERT queries

[datafeed] use explicit encode/decode instead of casting to str

[py3k] io.BytesIO

[py3k] get urllib foo from six.moves