libFLAC: merge master from Xiph

remote: https://git.xiph.org/flac.git
commit: 775eb93

Bug: 18872897
Bug: 18910747
Change-Id: I6e450e44c96b97c3323e428b9e6d420422f24a4e
(cherry picked from commit 31e4f3166a91a2ebb34f643787122a638d9f1471)
53 files changed
tree: fa607172a51170011043a907c3a475da4c60c24a
  1. include/
  2. libFLAC/
  3. Android.mk
  4. MODULE_LICENSE_BSD_LIKE
  5. NOTICE
  6. config.h