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    Update zlib to 1.2.11 · 13dc246a
    mark authored
    Reapply and regenerate all local patches to upstream zlib 1.2.11
    
    Explicitly specify 9 as the minimum windowBits value (representing a
    512-byte window) during compression in net/websockets even when 8
    (representing 256) is received. This was previously silently done during
    compression. Because of how zlib's deflate is implemented, when
    windowBits is 9, it will produce a stream that can be decompressed with
    a 250-byte or larger window.
    
    Changes in 1.2.9 (31 Dec 2016)
    - Fix contrib/minizip to permit unzipping with desktop API [Zouzou]
    - Improve contrib/blast to return unused bytes
    - Assure that gzoffset() is correct when appending
    - Improve compress() and uncompress() to support large lengths
    - Fix bug in test/example.c where error code not saved
    - Remedy Coverity warning [Randers-Pehrson]
    - Improve speed of gzprintf() in transparent mode
    - Fix inflateInit2() bug when windowBits is 16 or 32
    - Change DEBUG macro to ZLIB_DEBUG
    - Avoid uninitialized access by gzclose_w()
    - Allow building zlib outside of the source directory
    - Fix bug that accepted invalid zlib header when windowBits is zero
    - Fix gzseek() problem on MinGW due to buggy _lseeki64 there
    - Loop on write() calls in gzwrite.c in case of non-blocking I/O
    - Add --warn (-w) option to ./configure for more compiler warnings
    - Reject a window size of 256 bytes if not using the zlib wrapper
    - Fix bug when level 0 used with Z_HUFFMAN or Z_RLE
    - Add --debug (-d) option to ./configure to define ZLIB_DEBUG
    - Fix bugs in creating a very large gzip header
    - Add uncompress2() function, which returns the input size used
    - Assure that deflateParams() will not switch functions mid-block
    - Dramatically speed up deflation for level 0 (storing)
    - Add gzfread(), duplicating the interface of fread()
    - Add gzfwrite(), duplicating the interface of fwrite()
    - Add deflateGetDictionary() function
    - Use snprintf() for later versions of Microsoft C
    - Fix *Init macros to use z_ prefix when requested
    - Replace as400 with os400 for OS/400 support [Monnerat]
    - Add crc32_z() and adler32_z() functions with size_t lengths
    - Update Visual Studio project files [AraHaan]
    
    Changes in 1.2.10 (2 Jan 2017)
    - Avoid warnings on snprintf() return value
    - Fix bug in deflate_stored() for zero-length input
    - Fix bug in gzwrite.c that produced corrupt gzip files
    - Remove files to be installed before copying them in Makefile.in
    - Add warnings when compiling with assembler code
    
    Changes in 1.2.11 (15 Jan 2017)
    - Fix deflate stored bug when pulling last block from window
    - Permit immediate deflateParams changes before any deflate input
    
    BUG=691074, 691075
    
    Review-Url: https://codereview.chromium.org/2690623003
    Cr-Original-Commit-Position: refs/heads/master@{#450585}
    Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
    Cr-Mirrored-Commit: 6d9a6251dfe87183075dc16cfa134e41dc4cee0d
    13dc246a
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