D4911: zstandard: vendor python-zstandard 0.10.0

[indygreg (Gregory Szorc)]

indygreg created this revision.
Herald added a subscriber: mercurial-devel.
Herald added a reviewer: hg-reviewers.

REVISION SUMMARY
  This was just released.
  
  The upstream source distribution from PyPI was extracted. Unwanted
  files were removed.
  
  The clang-format ignore list was updated to reflect the new source
  of files.
  
  setup.py was updated to pass a new argument to python-zstandard's
  function for returning an Extension instance. Upstream had to change
  to use relative paths because Python 3.7's packaging doesn't
  seem to like absolute paths when defining sources, includes, etc.
  The default relative path calculation is relative to setup_zstd.py
  which is different from the directory of Mercurial's setup.py.
  
  The project contains a vendored copy of zstandard 1.3.6. The old
  version was 1.3.4.
  
  The API should be backwards compatible and nothing in core should
  need adjusted. However, there is a new "chunker" API that we
  may find useful in places where we want to emit compressed chunks
  of a fixed size.
  
  There are a pair of bug fixes in 0.10.0 with regards to
  compressobj() and decompressobj() when block flushing is used. I
  actually found these bugs when introducing these APIs in Mercurial!
  But existing Mercurial code is not affected because we don't
  perform block flushing.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D4911

AFFECTED FILES
  contrib/clang-format-ignorelist
  contrib/python-zstandard/MANIFEST.in
  contrib/python-zstandard/NEWS.rst
  contrib/python-zstandard/README.rst
  contrib/python-zstandard/c-ext/compressionchunker.c
  contrib/python-zstandard/c-ext/compressionparams.c
  contrib/python-zstandard/c-ext/compressionreader.c
  contrib/python-zstandard/c-ext/compressionwriter.c
  contrib/python-zstandard/c-ext/compressobj.c
  contrib/python-zstandard/c-ext/compressor.c
  contrib/python-zstandard/c-ext/constants.c
  contrib/python-zstandard/c-ext/decompressionreader.c
  contrib/python-zstandard/c-ext/decompressobj.c
  contrib/python-zstandard/c-ext/decompressor.c
  contrib/python-zstandard/c-ext/python-zstandard.h
  contrib/python-zstandard/make_cffi.py
  contrib/python-zstandard/setup.py
  contrib/python-zstandard/setup_zstd.py
  contrib/python-zstandard/tests/test_compressor.py
  contrib/python-zstandard/tests/test_compressor_fuzzing.py
  contrib/python-zstandard/tests/test_data_structures.py
  contrib/python-zstandard/tests/test_data_structures_fuzzing.py
  contrib/python-zstandard/tests/test_decompressor.py
  contrib/python-zstandard/tests/test_module_attributes.py
  contrib/python-zstandard/tests/test_train_dictionary.py
  contrib/python-zstandard/zstandard/__init__.py
  contrib/python-zstandard/zstd.c
  contrib/python-zstandard/zstd/common/bitstream.h
  contrib/python-zstandard/zstd/common/compiler.h
  contrib/python-zstandard/zstd/common/cpu.h
  contrib/python-zstandard/zstd/common/debug.c
  contrib/python-zstandard/zstd/common/debug.h
  contrib/python-zstandard/zstd/common/entropy_common.c
  contrib/python-zstandard/zstd/common/fse.h
  contrib/python-zstandard/zstd/common/fse_decompress.c
  contrib/python-zstandard/zstd/common/huf.h
  contrib/python-zstandard/zstd/common/mem.h
  contrib/python-zstandard/zstd/common/pool.c
  contrib/python-zstandard/zstd/common/pool.h
  contrib/python-zstandard/zstd/common/xxhash.c
  contrib/python-zstandard/zstd/common/zstd_common.c
  contrib/python-zstandard/zstd/common/zstd_internal.h
  contrib/python-zstandard/zstd/compress/fse_compress.c
  contrib/python-zstandard/zstd/compress/hist.c
  contrib/python-zstandard/zstd/compress/hist.h
  contrib/python-zstandard/zstd/compress/huf_compress.c
  contrib/python-zstandard/zstd/compress/zstd_compress.c
  contrib/python-zstandard/zstd/compress/zstd_compress_internal.h
  contrib/python-zstandard/zstd/compress/zstd_double_fast.c
  contrib/python-zstandard/zstd/compress/zstd_double_fast.h
  contrib/python-zstandard/zstd/compress/zstd_fast.c
  contrib/python-zstandard/zstd/compress/zstd_fast.h
  contrib/python-zstandard/zstd/compress/zstd_lazy.c
  contrib/python-zstandard/zstd/compress/zstd_lazy.h
  contrib/python-zstandard/zstd/compress/zstd_ldm.c
  contrib/python-zstandard/zstd/compress/zstd_ldm.h
  contrib/python-zstandard/zstd/compress/zstd_opt.c
  contrib/python-zstandard/zstd/compress/zstd_opt.h
  contrib/python-zstandard/zstd/compress/zstdmt_compress.c
  contrib/python-zstandard/zstd/compress/zstdmt_compress.h
  contrib/python-zstandard/zstd/decompress/huf_decompress.c
  contrib/python-zstandard/zstd/decompress/zstd_decompress.c
  contrib/python-zstandard/zstd/dictBuilder/cover.c
  contrib/python-zstandard/zstd/dictBuilder/cover.h
  contrib/python-zstandard/zstd/dictBuilder/divsufsort.c
  contrib/python-zstandard/zstd/dictBuilder/fastcover.c
  contrib/python-zstandard/zstd/dictBuilder/zdict.c
  contrib/python-zstandard/zstd/dictBuilder/zdict.h
  contrib/python-zstandard/zstd/zstd.h
  contrib/python-zstandard/zstd_cffi.py
  setup.py

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