Include external modules statically in extractor implementations

- Statically include libvorbisidec in OggExtractor
- Statically include libstagefright_flacdec in MatroskaExtractor
- Statically include libsonivox in MidiExtractor
- Include MidiIoWrapper as a static lib in MidiExtractor

Test: build
Bug: 65851881
Bug: 67908539
Change-Id: I1406f86e7a64fe96a1fdbcaeaa47912dfe34f33a