Adds SCTP data channels to the bridge.
Merge branch 'master' into sctp_data_channels

Conflicts:
	lib/libjitsi.jar
	lib/netaddr.jar
	lib/protocol-jabber.jar
	src/org/jitsi/videobridge/IceUdpTransportManager.java
Synchronizes .jar files.
Adds callback for receiving data on WebRTCDataStream.
Fixes Sctp.init() and Sctp.finish() handling. Fixes crash in SctpSocket.onConnIn.
SCTP stack will be never deinitialized for the time beign because of the deadlock in usrsctp_finish(). Minor fixes.
Fixes unknown error in usrsctp_connect on Windows. Propagates IOExceptions as an error back to usrsctp stack. Adds transfer test.
Adds experimental active speaker detection.
Adds basic support for SCTP event notifications.
Passively listens for incoming SCTP connection from WebRTC which fixes native crash caused by "out of the blue" packets received in case of simultaneous connect(still to be fixed). Adds debug IDs to logged SCTP packets.
Merge branch 'master' into sctp_data_channels

Conflicts:
	lib/libjitsi.jar
	lib/netaddr.jar
	lib/protocol-jabber.jar
Pushes DtlsControl changes to duplicated code used by SctpConnection.
Adds buffer offset and length parameters to SCTP methods.
Fixes setSoTimeout issue by using Libjitsi's DtlsControl and transform layer.
Refactor code common for both RtpChannel and SctpConnection. Adjusts to DtlsControl changes.
Merge branch 'master' into sctp_data_channels

Conflicts:
	src/org/jitsi/videobridge/Channel.java
	src/org/jitsi/videobridge/ComponentImpl.java
	src/org/jitsi/videobridge/Conference.java
	src/org/jitsi/videobridge/Content.java
	src/org/jitsi/videobridge/IceUdpTransportManager.java
	src/org/jitsi/videobridge/TransportManager.java
Merge branch 'master' into sctp_data_channels

Conflicts:
	lib/libjitsi.jar
	lib/netaddr.jar
	src/org/jitsi/videobridge/Channel.java
	src/org/jitsi/videobridge/Conference.java
	src/org/jitsi/videobridge/Content.java
Binds active speaker detection to data channels.
Merge branch 'master' into sctp_data_channels

Conflicts:
	lib/libjitsi.jar
	src/org/jitsi/videobridge/Channel.java
	src/org/jitsi/videobridge/Conference.java
	src/org/jitsi/videobridge/Content.java
	src/org/jitsi/videobridge/Endpoint.java
Merge branch 'sctp_data_channels'

Conflicts:
	lib/libjitsi.jar