Improve ICE server parsing

Altered the ICE server JSON parsing to support all the likely known
forms and combinations of username, password, credential, and url.

Also added debug logging of sent and received WebRTC signalling messages.

Change-Id: Ief4f1732ef0e3d448b6ce3175d5f084af9e92cf1
Update libjingle .so to fix runaway thread looping problem.

Occurs when VSYNC Looper timeout is set too low.

Change-Id: I7d1ff18b05c52e024f326663c407fdcf148c68ab