Changed mechanism for detecting CombatExtended, due to some reported issues

Shooters will no longer worry about pawns wearing a shield belt with at least 10% power standing in the line of fire.

Updated to B18

[Auto-generated text]: Update on 9/26/2017 8:35:33 AM.

Allow shooting at very close range where FF will not occur

Fix bug where shooters behind cover were not accounting FF from leaning

Mod now supports weapons with forced miss radius, such as miniguns

Fix bug with pawns not putting out fires when friendlies are standing next to them.

* Add support for Combat Extended mod
* Clean up FF records of dead pawns from extended storage

Fix bug where FF toggle button for a selected pawn does not go away when an Architecture toolbox is opened