Adding support for more flag attributes, removing special case rtcp-mux code
Testing bundle-only and end-of-candidates
chmod -x
Merge pull request #133 from martinthomson/ms_eoc

Adding end-of-candidates and bundle-only
Implement H264Parameters (mainly serialization).
Improve CheckRtpmap a little.
Implement Load logic for h264 fmtp.
Tolerate a= on candidates
Get some more test-cases passing.
We do not actually do telephone-event.
Teach JsepSession to handle h264 parameters.