Creating a copy of Udp transport under webrtc/test

Adding a test namespace, updating the include paths and renamed folder name.
Review URL: https://webrtc-codereview.appspot.com/1203004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@3701 4adac7df-926f-26a2-2b94-8c16560cd09d
23 files changed