This rolls up to include a fuzzer cherry-pick and picks up some encoder speedups.

- 1/14/2019: version 1.0.2
  This is a binary compatible release.
  * (Windows) unicode file support in the tools (linux and mac already had
    support,  issue #398 )
  * lossless encoder speedups
  * lossy encoder speedup on ARM
  * lossless multi-threaded security fix (chromium:917029)