This reverts commit ff1eb103.

This should now work as expected.

broken SRTP authentication tags when a non-zero offset is introduced
(for example from an external packet transformer). Closes #43.

Loads JNI libraries using JNIUtils instead of System in order to support binaries packed into the JAR as well.

Deletes the files which implement Speex with pure Java because we are not using them anyway and we do not want the obsolete dependency on jspeex.

addRTPExtension() is called before a StreamConnector has been set, and a
NPE when an ssrc-audio-level extension is set while there is no device
session.

java.lang.NullPointerException at
org.jitsi.impl.neomedia.transform.srtp.SRTPTransformer.transform(SRTPTransformer.java:205) at
org.jitsi.impl.neomedia.transform.dtls.DtlsPacketTransformer.transform(DtlsPacketTransformer.java:1227) at
org.jitsi.impl.neomedia.transform.SinglePacketTransformer.transform(SinglePacketTransformer.java:84) at
org.jitsi.impl.neomedia.transform.TransformEngineChain$PacketTransformerChain.transform(TransformEngineChain.java:293) at
org.jitsi.impl.neomedia.transform.TransformUDPOutputStream.createRawPacket(TransformUDPOutputStream.java:67) at
org.jitsi.impl.neomedia.RTPConnectorOutputStream.write(RTPConnectorOutputStream.java:423) at
org.jitsi.impl.neomedia.rtp.translator.OutputDataStreamImpl.doWrite(OutputDataStreamImpl.java:201) at
org.jitsi.impl.neomedia.rtp.translator.OutputDataStreamImpl.run(OutputDataStreamImpl.java:344) at
java.lang.Thread.run(Thread.java:745)

Updates the JNA library to version 4.1.0 because it is dual-licensed under LGPL 2.1 and Apache License 2.0.

Moves the FFmpeg and G722 JNI libraries from libjitsi to jitsi-lgpl-dependencies because they statically link to LGPL objects.

- Creates an AbstractRTCPTerminationStrategy that takes care of all the
  boilerplate code for RTCP termination strategies and shall serve as a
  base for all RTCP termination strategies. This newly introduced class
  acts an RTCP compound packet transform chain. Inheritors can add
  transformers to that chain and generate RTCP reports.
- Moves the receiver feedback filtering functionality from the
  BasicRTCPTerminationStrategy into a new ReceiverFeedbackFilter class
  (a specialized RTCP compound packet transformer) so that it can be
  reused more easily.
- Moves the feedback cache updating functionality from the
  BasicRTCPTerminationStrategy into a new FeedbackCacheUpdater class (a
  specialized RTCP compound packet transformer) so that it can be reused
  more easily.
- Merges the ReceiverReporting class into BasicRTCPTerminationStrategy.
- Refactors the BasicRTCPTerminationStrategy and the
  HighestQualityRTCPTerminationStrategy as specializations of the
  AbstractRTCPTerminationStrategy.

blocking if we try to send too much through a TCP socket.