reduce javelin damage

This way it really does what was promised in the last commit (ac8d5934), and not kill someone with 2 good throws.

planet/Objects.ocd/Items.ocd/Weapons.ocd/Javelin.ocd/Script.c

@@ -12,7 +12,7 @@ local shooting_strength = 21;
 
 public func MaxStackCount() { return 3; }
 // Note that the javelin damage also takes the speed into account. A direct eye-to-eye hit will do roughly this damage.
-public func JavelinStrength() { return 18; }
+public func JavelinStrength() { return 16; }
 public func TumbleStrength() { return 100; }
 
 local animation_set;