MFH r336801,r336854:

MFH r336801 (cem):
Cherry-pick upstream 2c8c83b9

Relevant vendor changes:
Fix issue #948: out-of-bounds read in lha_read_data_none()

MFH r336854:
Sync libarchive with vendor.

Important vendor changes:
PR #993: Chdir to -C directory for metalog processing
OSS-Fuzz #4969: Check size of the extended time field in zip archives
PR #973: Record informational compression level in gzip header

amdbugs: 877
Security: CVE-2017-14503

MFC r314571:
Update libarchive to version 3.3.1 (and sync with latest vendor dist)

Notable vendor changes:
PR #501: improvements in ACL path handling
PR #724: fix hang when reading malformed cpio files
PR #864: fix out of bounds read with malformed GNU tar archives
Documentation, style, test suite improvements and typo fixes.

New options to bsdtar that enable or disable reading and/or writing of:
Access Control Lists (--acls, --no-acls)
Extended file flags (--fflags, --no-fflags)
Extended attributes (--xattrs, --no-xattrs)
Mac OS X metadata (Mac OS X only) (--mac-metadata, --no-mac-metadata)