pfSense

• Merge multiple PPPoE/PPTP interfaces from RELENG_1_MULTI_ANYTHING
• Much improved rule generation speed
• Many bug fixing in general of the interface handling

NOTE: this is only half part of the changes the other half will come after

Move gateway status and monitoring over to gwlb.inc.
Still needs a return_gateway_status_by_name();

Bring in relayd to perform server load balancing
Move gateway load balancing code into gwlb.inc - still uses slbd

TODO: vs and pool status screens are currently broken...and wouldn't work
with the gateway pools anyway, ultimately, the gateway pools need...