pfSense

Various fixes and improvements for the DNS rebind and HTTP referrer checks.

• Only compare with full host from referrer, since someone can put whatever they want at the left side of the period to the left of the domain name.
• Now can check for hostname as well, not just hostname.domain, in referrer check.
• Fix althostnames case for referrer check.
• Move the simpler, more commonly used cases above the ones involving foreach loops and skip the loops when a name match has already been found.
• Break out of foreach loops when a match has already been found.
• Do case-insensitive matching of hosts and domains.
• Remove useless checks of non-IP addresses against SERVER_ADDR.