Changed decoding format for CC transaction identifier.
Added message definitions for CC MS to Network Alerting, Connect, Connect Ack, Disconnect, Release, Release Complete, Status and Status Enquiry.
While encoding do not add the type and/or length for an optional IE when it's missing.



git-svn-id: http://yate.null.ro/svn/yate/trunk@5707 acf43c95-373e-0410-b603-e72c3f656dc1