pfSense

Add a global declaration.

Improve/correct the passthrumac rules when this option is enabled.

Ticket #565. Correct deleting passthru mac entries. revert back to always allow a passthru mac as with allowed ips. Remove the check during login for passthru mac entries they will never make it to the login page.

fix up text

Warn the user when we cannot get the MAC address on pass through auto add case. Also when a user does a logout through clicking the logout form exit after showing sending info on logout successful.

Use tables of ipfw for passthrough mac entries. This makes it scale way better than previously. Fix multiple entries on adding mac through entries automatically after login for the same user. The changes allow even pass through mac to be controlled from the Status->Captiveportal. Use serialize/unserialize on some files that keep temporary information to speed up calculations. Really allow mac passthrough to follow radius rules or time out rules when present.

Add a new option which allows the admin user to configure CP so that it automatically enters an MAC passthru entry. The MAC is taken from login details and has to be removed manually. Also do improvements on rules handling and pipes. Add some optmizations. Teach the GUI/backend on ip/mac passthrough to configure a bw limit for this entries.

Ticket #483. Load the bcmath extension dynamically through PEAR for Radius accounting.

Rework includes/require. This saves about 4 megabytes.
Simplify get_memory(). Tested on mips/i386

fix typos