zstd: vendor python-zstandard 0.8.0
Commit 81e1f5bbf1fc54808649562d3ed829730765c540 from
https://github.com/indygreg/python-zstandard is imported without
modifications (other than removing unwanted files).
Updates relevant to Mercurial include:
* Support for multi-threaded compression (we can use this for
bundle and wire protocol compression).
* APIs for batch compression and decompression operations using
multiple threads and optimal memory allocation mechanism. (Can
be useful for revlog perf improvements.)
* A ``BufferWithSegments`` type that models a single memory buffer
containing N discrete items of known lengths. This type can be
used for very efficient 0-copy data operations.
# no-check-commit
Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: mercurial
Source: https://www.mercurial-scm.org/
Files: *
Copyright: 2005-2017, Matt Mackall <mpm@selenic.com> and others.
License: GPL-2+
This program is free software; you can redistribute it
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License as published by the Free Software Foundation; either
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PURPOSE. See the GNU General Public License for more
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