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 r317781:
Sync libarchive with vendor

Vendor changes (FreeBSD-related):
PR 897: add test for ZIP archives with invalid EOCD headers
PR 901: fix invalid renaming of sparse files
OSS-Fuzz issue 497: remove fallback tree in LZX decoder
OSS-Fuzz issue 527: rewrite expressions in lz4 filter
OSS-Fuzz issue 577: fix integer overflow in cpio reader
OSS-Fuzz issue 862: fix numerc parsing in mtree reader
OSS-Fuzz issue 1097: fix undefined shift in rar reader
cpio: various optimizations and memory leak fixes

MFC after: 1 week

Merge changes from vendor to address several Coverity issues with
contrib/libarchive's tests

MFC after: 2 weeks
Obtained from: libarchive (ebe29c, fd0ea2, f9e3de)
Reported by: Coverity

Copy libarchive from vendor branch to contrib

MFC after: 2 weeks