pfSense

Show a count of the CPUs if more than one is detected, and show how those CPUs are supplied by the hardware.

Use ipprotocol to check gateway protocol, this fix a issue that allow to set more than one default gateway when it's dynamic

Merge pull request #785 from phil-davis/master

Tidy up use of hw.physmem and hw.realmem from get_memory()

Use physmem and realmem from get_memory() in the appropriate places

Use new names for get_memory parameters

Use hw.physmem when calculating pfsense_default_state_size

hw.physmem is the actual amount of memory that FreeBSD/pfSense can get its hands on, so use this for the calculation.

Use updated get_memory var names

The value of minimum_ram_warning is designed to be compared to hw.physmem - so do that. Usse the appropriate physmem or realmem value in each place.

Improve var names in get_memory

realmem is the amount of actual (real) memory installed - the size of the RAM card - e.g. 256MB
physmem is the amount of memory available to FreeBSD after BIOS, video... has stolen some of realmem.
The variable names currently used are not very helpful for code readability. This standardises them. No functional change here.

s/require/require_once/g for filter.inc to avoid redeclaration errors in some rare cases.

If upgrading NanoBSD, try to grab the previous timezone file so the zone is preserved on the next boot.