Merged MP's changes to give cmd to SP plus some SP specific changes:
'health' 'force' 'ammo' 'batteries' can all give amounts.
'eweaps' doesn't happen on give all now.
Health is now clamped 1..max
Armor is now clamped 0..maxhealth
Force is now clamped 0..100
Ammo is clamped -1...999 (-1 signifies giving each type its max ammo)
'ammo' without an amount argument now gives 999 instead of max per-ammo type
Batteries is now clamped 0..2500