Fix Denial of Service vulnerability in named(8). [13:07]

Fix a bug that allows remote client bypass the normal
access checks when when -network or -host restrictions
are used at the same time with -mapall. [13:08]

Security:	CVE-2013-4854
Security:	FreeBSD-SA-13:07.bind
Security:	CVE-2013-4851
Security:	FreeBSD-SA-13:08.nfsserver
Approved by:	so