Added PJSIP patch that adds "i=" line

darcs-hash:20090120143934-58103-a79d94efeb5727f8846f986ff09369b4c77ed466
Added info attribute to SDPSession and SDPMedia objects

darcs-hash:20090120144011-58103-6c516a09d37b3b846a9578d9653b3b1cb83523e2