Martin Matuska a2a3407c7e MFV r328323,328324:
Sync libarchive with vendor.

Relevant vendor changes:
  PR : delete dead ppmd7 alloc callbacks
  PR : Fix archive freeing bug in bsdcat
  PR : Fix ZIP format names
  PR : Don't modify attributes for existing directories
           when ARCHIVE_EXTRACT_NO_OVERWRITE is set
  PR : Fix -Werror=implicit-fallthrough= for GCC 7
  PR : zip: Allow backslash as path separator

MFC after:	1 week
2018-01-24 14:24:17 +00:00
..
2018-01-24 14:24:17 +00:00