pfSense

allow ipaliases to be configured on lo0

Fix variable name

remove openbgpd bits from system_gateways_edit and system.inc. The package
match is case-sensitive and hasn't matched the openbgpd package's name in
at least 5 years, so it doesn't do anything. It's far from functional in
any useful manner even fixing that issue.

Bring in proper gmirror support for the GUI and notifications.
Made a general gmirror library to perform various gmirror tasks and get information, using some of the former widget logic to start. Updated widget to use this new code.
Added a Diag > GEOM Mirrors page that displays information about existing mirrors and perform various management tasks. Current actions include rebuilding a drive, forgetting disconnected mirror drives, insert/remove, deactivate/activate, clearing medatada. It's now possible to use the GUI to rebuild a failed mirror by performing a forget, then insert action to replace a missing/dead drive....

glob() is already called by unlink_if_exists

client-config-dir is also useful when using OpenVPN's internal DHCP while bridging.

Add @ to silent any possible return of posix_kill

Fix typo

Improve /etc/sshd:

. Create ed25519 key for ssh and silent daemon
. Remove some exec() calls
. We do not need to re-create all keys if /root/.ssh/authorized_keys is
empty
. Remove some redundancy and declare a single array with all keys

Include the v4 prefix on the v6 netmask to make routing more sane and alos tracking interface configurations work!