Changed heap allocation to stack
Added pure virtual destructor to abstract base classes
Merge branch 'code_improvements' of https://github.com/mark3141/licode into mark3141-code_improvements
Fixed compilation for ubuntu 12.04 and mac os 10.7+
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