some enhancements to use the ZRTP multi-stream mode also in SC and
have secure multi-media (audio and video) sessions.
Unfortunately I cannot test this to its full extend (missing video
equipment) so I kindly ask for additional testing and error reporting.
If the video stream is secure then this should be shown in the relevant
part of the ZRTP panel. Please note that additional streams do not
have an own SAS, only the first stream (usually the audio stream) has
a SAS that can (should) be verified.
If something goes wrong (rare case, but could happen ) you may
enable the following logging property to see the ZRTP callback log
net.java.sip.communicator.impl.media.transform.zrtp.level = INFO
Test reports are welcome.