Filters RTP packets in accord with the MediaStream direction. Fixes problems with new ReceiveStream-s being created while on hold.

Fixes an issue with Packet Loss Concealment (PLC) which could cause muting in Jitsi Videobridge conferences to 'repeat' after unmuting.

Uses client-to-mixer audio levels as defined by RFC 6464 to reduce the effects of decryption, decoding, and audio mixing in the presence of muted audio sources in a Jitsi Videobridge telephony conference.

RawPacket, instead of single RawPacket-s. This is necessary in order to
implement a RED (RFC2198) PacketTransformer, because a single RED RTP
packet might result in multiple packets.

punch packets being transformed by ZRTP).

Commits work in progress on utilizing Android's native hardware (and software) decoding (and encoding) via MediaCodec.

Fixes an issue which would leak at least one Thread per call which would endlessly send out RTCP packets.

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.