Input buffer timestamp used instead of setting as unknown

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

Deletes the lib/native/freebsd* directories because we do not plan on maintaining FreeBSD support and nobody has stepped forward to support them for a long time now.

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.

ice4j SVN revision 506: Fixes a stack overflow reported by James B. Byrne, investigated by Danny van Heumen.

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.

Conflicts:
	resources/install/build-debian.xml
	resources/install/debian/copyright
	resources/install/debian/patches/sdes4j.patch

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.

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.