Moves ConfigUtils and StringCompiler from videobridge to libjitsi util package, so that they can be reused in  other Jitsi projects.

DTLS) packets. Guards against possible problems caused by RTP header
extensions added in the beginning of the transformer chain.

factory with
XML external entities and doctype declarations disabled.

Adds a ConfigurationService/System property with name org.jitsi.impl.neomedia.MaxPacketsPerMillisPolicy.PACKET_QUEUE_CAPACITY which allows specifying the value of the field with the same name.

If the SDES attributes contain the same key material after an update,
don't recreate the contexts to prevent the reset of a stream ROC. If a
stream has restarted, it should be announced with a different SSRC.

Logs the AES implementation in use. Traces the benchmarked execution times of the available AES implementations.

Adds a boolean ConfigurationService/System property org.jitsi.impl.neomedia.transform.dtls.DtlsPacketTransformer.dropUnencryptedPkts which indicates whether sent/received unencrypted packets are to be dropped.

createRtpdumpMediaDevice() in two methods, so that the one for
audio can accept a specific AudioFormat.

Implements AES and HMAC-SHA1 using OpenSSL. Automatically selects the fastest AES implementation at runtime among BouncyCastle, OpenSSL, Sun JCE and Sun PKCS#11.