vendor/libarchive: upgrade from 3.4.3 to 3.6.1

Notable changes:

- 7zip reader: fix PPMD read beyond boundary (#1671)
- ZIP reader: fix possible out of bounds read (OSS-Fuzz 38766 #1672)
- ISO re

vendor/libarchive: upgrade from 3.4.3 to 3.6.1

Notable changes:

- 7zip reader: fix PPMD read beyond boundary (#1671)
- ZIP reader: fix possible out of bounds read (OSS-Fuzz 38766 #1672)
- ISO reader: fix possible heap buffer overflow in read_children()
- tar: new option "--no-read-sparse" (#1614)
- ZIP reader: zstd decompression support (#1518)
- extended fix for following symlinks when processing the fixup
list (#1566, #1617, CVE-2021-31566)
- fix invalid memory access and out of bounds read in RAR5 reader
(#1491, #1492, #1493, CVE-2021-36976)
- ZIP reader: Support of deflate algorithm in symbolic link
decompression (#1509)
- do not follow symlinks when processing the fixup list (#1566)
- fixed extraction of archives with hard links pointing to itself (#1381)
- fixed memory leaks in error case of archive_write_open() functions (#1456)

For details, see release notes or commit history on github:
https://github.com/libarchive/libarchive/releases/tag/v3.6.1

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vendor/libarchive: upgrade from 3.3.3 to 3.4.3

Fixes CVE-2019-18408.

New features:
- support for pzstd compressed files
- support for RHT.security.selinux tar extended attribute
- atomic file extra

vendor/libarchive: upgrade from 3.3.3 to 3.4.3

Fixes CVE-2019-18408.

New features:
- support for pzstd compressed files
- support for RHT.security.selinux tar extended attribute
- atomic file extraction support (bsdtar -x --safe-writes)
- unicode filename support for reading lha/lzh archives
- new pax write option "xattrhdr"
- read support for RAR 5.0 archives
- read support for ZIPX archives with xz, lzma, ppmd8 and bzip2
compression
- support for non-recursive list and extract
- new tar option: --exclude-vcs
- 64-bit ar format support

Bugfixes:
- use-after-free in a certain ARCHIVE_FAILED situation
- various zstd fixes and improvements
- child process handling fixes
- compression buffer fix in XAR writer
- fix for uname and gname longer than 32 characters in PAX writer
- fix segfault when archiving hard links in ISO9660 and XAR writers
- fix support for extracting 7z archive entries with Delta filter
- security fixes and optimizations to write filter logic
- security fix related to use of readlink(2)
- sparse file handling fixes
- fix reading Android APK archives
- fix problems related to unreadable directories
- patches from OpenBSD to libarchive_fe/passphrase.c
- support extracting ACLs with in-entry comments
- support extracting extattrs as non-root on non-user-writable files
- various resource leak, use-after-free and crash fixes

For details, see release notes or commit history on github:
https://github.com/libarchive/libarchive/wiki/ReleaseNotes

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Import libarchive-3.3.3

Remove README.DELETED, it will be recreated on master branch.

Import libarchive-3.0.4.

Import libarchive-3.0.2.

*libarchive 3.0.2 released
*Various fixes merged from FreeBSD
*Symlink support in Zip reader and writer
*Robustness fixes to 7Zip reader

*libarchive 3.0.1b released
*7Zip r

Import libarchive-3.0.2.

*libarchive 3.0.2 released
*Various fixes merged from FreeBSD
*Symlink support in Zip reader and writer
*Robustness fixes to 7Zip reader

*libarchive 3.0.1b released
*7Zip reader
*Small fixes to ISO and Zip to improve robustness with corrupted input
*Improve streaming Zip reader's support for uncompressed entries
*New seeking Zip reader supports SFX Zip archives

*libarchive 3.0.0a released
*Update shared-library version calculations for libarchive 3.x
*Fix tar -s; follow GNU tar for controlling hardlink/symlink substitutions
*Fix reading ISO images built by NetBSD's mkisofs
*Old archive_read_support_compression_XXX functions are deprecated and
will disappear in libarchive 4.0.
*RAR reader
*Add tar:compat-2x option to emulate broken libarchive 2.x
handling of pax UTF-8 headers
*Refactor read_open() into a collection of single-item setters;
support the old interfaces as wrappers
*Split disk writer into separate POSIX and Windows implementations
*More work to return errors instead of calling abort()
*Add charset option to many writers to control MBCS filenames
*Overhauled support for per-format extension options
*Track character set used for mbcs strings, support
translating to/from user-specified locale
*Recognize mtree files without requiring a signature
*Use iconv to convert to/from Unicode instead of making bad
assumptions about the C90 character set translation functions
*CAB reader
*LHA/LZH reader
*Many improvements to ISO reader compatibility
*Use larger buffers when copy files into an archive
*archive_read_disk now supports traversals
*XAR writer
*Fix ^T handling; don't exit on interrupted reads and writes
*Improved detection of platform-specific crypto support
*lzip read and write filters
*tar --gid --gname --uid --uname
*Use Red-black tree for ISO reader/writer to improve performance
*Minimal writer for legacy GNU tar format
*Relax handling of state failures; misuse by clients now generally
results in a sticky ARCHIVE_FATAL rather than a visit to abort()
*ISO writer
*Split many man pages into smaller chunks.
*Cheat on block sizes when reading archives from disk.
*Use int64_t instead of off_t, dev_t, ino_t, uid_t, and gid_t
*Document new ACL functions.
*Support multiple write filters
*Remove some legacy libarchive 1.x APIs
*Read afio headers
*Archive sparse files compatibly with GNU tar
*Support cpio -V

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Import libarchive-2.8.5.

* Now reads ISO images created by NetBSD makefs and other tools.
* Relax an lzma compression test to remove false negatives.
* Better handling of open failures and interrupt

Import libarchive-2.8.5.

* Now reads ISO images created by NetBSD makefs and other tools.
* Relax an lzma compression test to remove false negatives.
* Better handling of open failures and interrupted writes.
* Corrected compile warnings on various platforms.

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Import libarchive-2.8.4.

Upgrade to libarchive-2.7.0.

Rename libarchive-2/ to libarchive/. No need for it to be versioned.