Fix a seek regression in 1.0.26.
https://github.com/erikd/libsndfile/commit/
f29c0dc2091febb2df6198c38b1664c30c3ea77d
Change-Id: I3db5517f49ac93d1390838625805b76532781ae5
use dlopen for vorbis encoder to load so when actual needed, this will reduce runtime memory consumption
Change-Id: I7b3b6b82cafde364b752812523221ce430ae0526