changes

CraftInfoState
	- fix reArm time remaining.
ExplosionBState
InventoryState
ProjectileFlyBState
TileEngine
UnitInfoState
BattleUnit
	- strength reduction for -health only 1/2 rate.
Pathfinding
UnitWalkBState
	- apply modALT noFly penalty to Energy consumption
	- energy use becomes that of PowerSuit.

Xcom1Ruleset
	- increase aLien strength to handle heavier loadouts.