Added list of supported tranports to command line help

darcs-hash:20081202190124-58252-7bb096cb2dcee56e75a65b386d8bee40f9f29cd9
Added "tls_verify_server" and "tls_ca_file" init parameters to PJSIPUA, set timeout on TLS negotiation

darcs-hash:20081203111020-58103-91802d3e1f5ba76128639996b314ea19191a14de