Update scripts to include libnice 0.1.8
Update scripts to include libnice synchronous name resolution

This should be removed when it is better-implemented elsewhere.
transport: Always set up RTCP mux and normal RTCP pipelines and switch dynamically

Previously we were only setting up the non-RTCP mux pipeline unless
rtcp-mux was TRUE from the very beginning. This will never be the case
with WebRTC though, as we can only know if the other side can do RTCP mux
after SDPs are exchanged.

Now we always set up both paths, and for the sender dynamically switch
between RTCP muxing and normal RTCP depending on the property of the
media session. For receiving we just receive from both.
OwrTransportAgent: Add leaky queue before encoder

We don't want to queue up any large amount of buffers if downstream of
the encoder is blocked or if the encoder is taking too long to encode
frames. Also, we want the encoder to encode the most recent frame
available at the point when it is ready to encode the next frame.
Update scripts
webrtc_js: Fix incorrect casing in trickle ICE TCP candidate
Make also the related port be 9 for non-host TCP active candidates

In accordance with RFC 6544
peerhandler: Use the correct property name to enable/disable FIR
Don't create the RTCP component and elements when multiplexing RTP/RTCP

Also clarify the description of the rtcp-mux property

Closes #41