stagefright: Resolve turf war between FFMPEG and mm-parser

 * There is overlap between the supported codecs, and the extractors
   generally do the right thing. The current code will blindly call
   into the FFMPEG specific functions when some QC codec should
   be used though, so add checks on the component name first.
 * This resolves hitting asserts when using hardware WMA/WMV codecs.
 * Also add a contraint to block the VC1 codec from try to play ancient
   WMV formats, as it will fail.

Change-Id: I3b8aafaef7ae7c0f2e058f78b043380f04a41e73
libmedia: Add flag for non-native FAST tracks.

Change-Id: Ied9004c0bdc6314541b12095ca1defd0f291eb1a