MFC r275665:

Fix buffer overflow in stdio.

Security:	FreeBSD-SA-14:27.stdio
Security:	CVE-2014-8611
MFC r275666:

Fix multiple vulnerabilities in file(1) and libmagic(3).

Security:	FreeBSD-SA-14:28.file
Security:	CVE-2014-3710, CVE-2014-8116, CVE-2014-8117
MFC r275446: Plug memory leaks on UNMAP and XCOPY with invalid parameters.
MFC r275452: Do not corrupt the listen string when parsing it.

This fixes problem with ctld reload when it is configured to listen on two
portals with same IP, but different ports.