OS_CODE            95 third_party/zlib/zutil.h #  define OS_CODE  0x00
OS_CODE           110 third_party/zlib/zutil.h #  define OS_CODE  0x01
OS_CODE           114 third_party/zlib/zutil.h #  define OS_CODE  0x02
OS_CODE           120 third_party/zlib/zutil.h #  define OS_CODE  0x05
OS_CODE           124 third_party/zlib/zutil.h #  define OS_CODE  0x06
OS_CODE           131 third_party/zlib/zutil.h #  define OS_CODE  0x07
OS_CODE           142 third_party/zlib/zutil.h #  define OS_CODE  0x0a
OS_CODE           147 third_party/zlib/zutil.h #    define OS_CODE  0x0b
OS_CODE           152 third_party/zlib/zutil.h #  define OS_CODE  0x0f
OS_CODE           186 third_party/zlib/zutil.h #  define OS_CODE  0x03  /* assume Unix */