am f72859a1: Merge "Add posix_memalign to API16\'s libc.so, and to stdlib.h for API 16, 17, 18, 19"

* commit 'f72859a1450f389849fc2cead55d0fce0d3d31af':
  Add posix_memalign to API16's libc.so, and to stdlib.h for API 16, 17, 18, 19