Document r267639 CTL ABI breakage.
Fix multiple vulnerabilities in file(1) and libmagic(3).

Security:	FreeBSD-SA-14:16.file
Approved by:	so
Fix issues in config parser relating to lun serial numbers.

Without this fix some serial numbers needed to be quoted
to avoid the config parser bailing out.

Submitted by:	delphij
Sponsored by:	iXsystems