Add BWE tools for parsing RTP files.

bwe_rtp_play feeds packets from an RTP file into the BWE and prints the estimates.
bwe_rtp_to_text parses an RTP file and outputs the result to a text file.

R=henrik.lundin@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/7689006

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@5466 4adac7df-926f-26a2-2b94-8c16560cd09d
6 files changed