Re #1089:
 - Added a feature in dialog to store and retrieve remote capabilities dug from the remote messages.
 - Added few APIs in dialog to query and update remote capabilities, also added an API in pjsua_call to query whether a capability is supported by remote.



git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@3196 74dad513-b988-da41-8d7b-12977e46ad98
4 files changed