libarchive: merge from vendor branch

Libarchive 3.7.3

New features:
#1941 uudecode filter: support file name and file mode in raw mode
#1943 7-zip reader: translate Windows permissions into UNIX
permissions
#1962 zstd filter now supports the "long" write option
#2012 add trailing letter b to bsdtar(1) substitute pattern
#2031 PCRE2 support
#2054 add support for long options "--group" and "--owner" to tar(1)

Security fixes:
#2101 Fix possible vulnerability in tar error reporting introduced
in f27c173

Important bugfixes:
#1974 ISO9660: preserve the natural order of links
#2105 rar5: fix infinite loop if during rar5 decompression the last
block produced no data
#2027 xz filter: fix incorrect eof at the end of an lzip member
#2043 zip: fix end-of-data marker processing when decompressing zip
archives

PR: 278315 (exp-run)
MFC after: 1 week

MFV r357783:
Update libarchive to 3.4.2

Relevant vendor changes:
PR #1289: atomic extraction support (bsdtar -x --safe-writes)
PR #1308: big endian fix for UTF16 support in LHA reader
PR #1326: reject RAR5 files that declare invalid header flags
Issue #987: fix support 7z archive entries with Delta filter
Issue #1317: fix compression output buffer handling in XAR writer
Issue #1319: fix uname or gname longer than 32 characters in pax writer
Issue #1325: fix use after free when archiving hardlinks in ISO9660 or XAR
Use localtime_r() and gmtime_r() instead of localtime() and gmtime()

X-MFC-With: r356212,r356365,r356416
MFC after: 1 week

MFV r315633, 315635:

Sync libarchive with vendor

Vendor changes/bugfixes (FreeBSD-related):
PR 867 (bsdcpio): show numeric uid/gid when names are not found
PR 870 (seekable zip): accept files with valid ZIP64 EOCD headers
PR 880 (pax): Fix handling of "size" pax header keyword
PR 887 (crypto): Discard 3072 bytes instead of 1024 of first keystream
OSS-Fuzz issue 806 (mtree): rework mtree_atol10 integer parser
Break ACL read/write code into platform-specific source files
Unbreak static dependency on libbz2

MFC after: 1 week

Backport NFSv4 ACL fix from libarchive master branch.

Source:
https://github.com/libarchive/libarchive/commit/f67370d5

Obtained from: libarchive (master branch)

Set svn:keywords to FreeBSD=%H for contrib/libarchive

MFC after: 2 weeks

Copy libarchive from vendor branch to contrib

MFC after: 2 weeks

Backport NFSv4 ACL fix from libarchive master branch.

Source:
https://github.com/libarchive/libarchive/commit/f67370d5

Obtained from: libarchive (master branch)

Set svn:keywords to FreeBSD=%H for contrib/libarchive

MFC after: 2 weeks