Jakub Adam authored Oct 03, 2010 and Youness Alaoui committed Oct 04, 2010

Added comment explaining need of nice_turn_socket_set_ms_... functions
in priv_map_reply_to_relay_request().

Fixed bug in nice_turn_socket_new() where by accident I put both  STUN_AGENT_USAGE_SHORT_TERM_CREDENTIALS
and STUN_AGENT_USAGE_LONG_TERM_CREDENTIALS as usage flags to
stun_agent_init().