- remove the use for pfSctl, replaced with a new configd control script to be able to remove the check_reload_status port
- replace use of global $g['booting'] because some scripts use this outside the main loop which causes strange behavior ( for example dhcp client which starts a newwanip on connect ). replaced which check on file /var/run/booting which is set in rc script

- extra code injection prevention for script types
- add script_output type (return script results from stdout)

Via: https://forum.opnsense.org/index.php?topic=42.0

issue  https://github.com/opnsense/core/issues/63

Also style, license prettify, obvious bugs along the way.

Enables us to find all paths better using grep.  Always trying to
use the full path, even for system utility invoke in case those
move from ports to base or vice versa, related to #1.