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      1 Any Android specific modifications to upstream libpng (1.6.25) should
      2 be listed here:
      3 
      4 (1) Android has added the following files.
      5     pngusr.h
      6     Android.mk
      7     CleanSpec.mk
      8     MODULE_LICENSE_BSD_LIKE
      9     README.version
     10 
     11 (2) pnglibconf.h
     12     This is copied from scripts/pnglibconf.h.prebuilt.
     13     Android has undefined PNG_WARNINGS_SUPPORTED.
     14 
     15 (3) Removed contrib/testpngs/
     16     There is no reason to check in all of these files if we won't
     17     be using them.
     18 
     19 (4) Applied the Intel SSE patch
     20     Upstream places the patch for SSE support
     21     in contrib/intel/intel_sse.patch.
     22     The patch was applied using the following command:
     23     'patch -i contrib/intel/intel_sse.patch -p1'
     24