Set a session id on our server ssl context in m_ssl_openssl. It is required for some clients which try to restore SSL sessions.
m_ssl_openssl Fix memory leaks on /rehash ssl, unload and in VerifyCertificate()
m_banredirect Fix typo in a message (transfered -> transferred)

Fixes issue #757 reported by @guikcd
Fix new file descriptor debug log message in socketengine_poll to show the correct events
socketengine_epoll Initialize CurrentSetSize (only used by m_httpd_stats)