1Any Android specific modifications to upstream libpng (the version
2specified in METADATA) should be listed here:
3
4(1) Android has added the following files.
5    pngusr.h
6    Android.bp
7    CleanSpec.mk
8    MODULE_LICENSE_BSD_LIKE
9    METADATA
10    OWNERS
11
12(2) pnglibconf.h
13    This is copied from scripts/pnglibconf.h.prebuilt.
14    Android has undefined PNG_WARNINGS_SUPPORTED and
15    PNG_READ_OPT_PLTE_SUPPORTED.
16