Merge from vendor branch KIENTZLE:

Merge from vendor branch KIENTZLE:
libarchive-2.8.2:
- Fix NULL deference for short self-extracting zip archives
- Don't dereference symlinks on Linux when reading ACLs
- Better detection of SHA2 support for old OpenSSL versions
- Fix parsing of input files for bsdtar -T
- Do not leak setup_xattr into the global namespace
- Fix build when an older libarchive is already installed
- Use O_BINARY opening files in bsdtar
- Include missing archive_crc32.h
- Correctly include iconv.h required by libxml2