Ignores the 'RTP pacing threshold' setting if it's set to over 1000 (as opposed to failing with an exception).

Adds an option to set the video bitrate. Patches provided by Benoît Laniel on the dev@ mailing list (under the subject of '[PATCH] Set default max video bandwidth to 128')

Fixes a problem with RTCP PLI packets not being sent. The problem was that the usePLI field of VideoMediaStreamImpl was accessed from the constructor of the superclass (through the overloaded deviceSessionChanged method), before being initialized. As a result it's value was 'false' rather than the intended 'true'. This patch makes the field static, since (once initialized) it's value was always 'true' anyway.

This is the stack trace observed:
     [java] 	at org.jitsi.impl.neomedia.VideoMediaStreamImpl.deviceSessionChanged(VideoMediaStreamImpl.java:520)
     [java] 	at org.jitsi.impl.neomedia.MediaStreamImpl.setDevice(MediaStreamImpl.java:1678)
     [java] 	at org.jitsi.impl.neomedia.MediaStreamImpl.<init>(MediaStreamImpl.java:284)
     [java] 	at org.jitsi.impl.neomedia.VideoMediaStreamImpl.<init>(VideoMediaStreamImpl.java:318)
     [java] 	at org.jitsi.impl.neomedia.MediaServiceImpl.createMediaStream(MediaServiceImpl.java:364)

Refactors the way specific Codec instances are accessed in MediaStreamImpl. Passes "format parameters" received via SDP/Jingle to codecs, which can handle them (Opus).

Commits work in progress on refactorying the call-related user interface for the purposes of audio and video telephony conferencing over single or multiple protocols and Jitsi VideoBridge.

Fixes issues with video conferencing such as a failure of the local video to be displayed and a limitation of the conference focus with respect to requiring it to capture video as well.

Commits an initial version of the libjitsi library which should be fully functional with respect to neomedia/MediaService and should be usable with and without OSGi.