base

Support multiple PPS and SPS in avcC box

- Also
o do not use the hard-coded profile and levels.
  Instead, we are using the profile and level found in the codec config data
o we are not supporting FRExt profile and levels for now, which requires
  additional seq parameter set extension for instance.

Change-Id: If695b4c996d073d8e48aa45fdd7001e9f016f375