Remove H264RandomAccess class and rely on avcodec instead
Remove stdint.h in favor of Visual Studio official stdint.h

As of Visual Studio 2010, Microsoft provides their own stdint.h, so this
replacement version is long obsolete.
Remove conversion of H.264 in MPEG-TS to AVC1 format.

Popular decoder support H.264 in Annex B, and if they don't, they should
really learn to. Conversion is unnecessary complexity and can introduce
problems of its own.