MFC r356212,r356366,r356416,r357785
Update libarchive to version 3.4.2

Relevant vendor changes (r356212):
Issue #351: Refactor and implement private state logic for write filters
PR #1252: RAR5 reader - verify window size for solid files (OSS-Fuzz 15482)
PR #1255: zip writer - don't append unused NUL for directories
PR #1260: Fix sparse file offset overflow on 32-bit systems
PR #1263: UNICODE filename support for reading lha/lzh format
Issue #1276: Bugfix and optimize archive_wstring_append_from_mbs()
PR #1288: Add the "xattrhdr" option to pax write options
PR #1295: 7z reader - fix reading archives with digests in PackInfo
PR #1296: RAR5 reader - verify window size for multivolume archives
PR #1297: ZIP reader - support LZMA_STREAM_END marker in 'lzma alone' files
Issue #1298: Fix a heap-buffer-overflow in archive_string_append_from_wcs()
OSS-Fuzz 19360, 19362: LHA reader - plug two memory leaks on error
Fix possible off-by-one when dealing with readlink(2)

Relevant vendor changes (r356366):
Issue #1302: Plug memory leak on failure of archive_write_client_open()

Relevant vendor changes (r356416):
Issue #1302: Re-do fix for archive_write_client_open()

Relevant vendor changes (r357785):
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()

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFV r248590,248594:
Update libarchive to 3.1.2

Some of new features:
- support for lrzip and grzip compression
- support for writing tar v7 format
- b64encode and uuencode filters
- support for __MACOSX directory in Zip archives
- support for lzop compresion (external utility)

Update libarchive to 3.0.3

Some of new features:
- New readers: RAR, LHA/LZH, CAB reader, 7-Zip
- New writers: ISO9660, XAR
- Improvements to many formats, especially including ISO9660 and Zip
- Stackable write filters to write, e.g., tar.gz.uu in a single pass
- Exploit seekable input; new "seekable" Zip reader can exploit the Zip
Central Directory when it's available; the old "streamable" Zip reader
is still fully supported for cases where seeking is not possible.

Full release notes available at:
https://github.com/libarchive/libarchive/wiki/ReleaseNotes

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

MFC after: 2 weeks

Copy libarchive from vendor branch to contrib

MFC after: 2 weeks

Set svn:eol-style property to native for all text files in vendor/libarchive

Vendor import of libarchive (release/2.8, r3824)

Obtained from: http://libarchive.googlecode.com/svn/release/2.8