libwebp-1.0.2

- 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)

1. 7c76255 autoconf: update ax_pthread.m4 by James Zern · 12 years ago
2. 1d40a8b configure: add pthread detection by James Zern · 13 years ago
3. b247a3b Create the m4 directory, and also place .gitignore in there for libtool. by Pascal Massimino · 15 years ago