Stop installing libnice package.

We use a local copy of libnice-0.1.4 instead of the distribution
packaged libnice-0.1.1. No need to install the distribution package.
Fixed a bug in p2p rooms
Added support for TURN in erizo server side and better support for relay
candidates
Fixed memory leak in candidate allocation plus better passing of
candidates to libnice
Added log message with the selected candidate
Added patch to libnice 0.1.4 according to Yannick comments in mailing list to bypass Symmetric NATs
Added libnice patch to mac installation script
Fixed crash when audio codec is not found
Merge pull request #80 from byronclark/drop-deprecated-libnice

Stop installing libnice package.