Fix threading problems in voicemail code

Hold libvariablespeed handle in a reference counted singleton. Don't
always reinitialize the engine twice in quick succession on startup.
Catch and properly handle RejectedExecutionException exceptions thrown
by the executor service.

Bug:11511992
Change-Id: I6198dec303209445a0efd0f410a67332d75c7507
2 files changed
tree: 3d4483fd66a1bd9a68c3a4fc0138191657c79edb
  1. res/
  2. src/
  3. tests/
  4. Android.mk
  5. AndroidManifest.xml
  6. proguard.flags