Add OMX_AUDIO_CodingAPE and OMX_AUDIO_CodingDTS

Copied from the stagefright-plugins project.

add HEVC decoder and cleanup

Change-Id: I16342228014320161a22302a3c14df7725556cd2
Calculate application sizes correctly

Thanks to Pierre-Hugues Husson for looking at my code and finding out
that the application sizes were not being calculated properly!

Change-Id: I68af6a9e5d1b2b7e60c0409b55d8ee578e567a69