Prevent Launcher's Ammo-less Ammunition from stacking with Real Ammunition

This mod aims to fix the following items so that they do not add the effects of their magical ammunition to real ammunition. FYI - this is a direct nerf to their current functionality.

Tansheron's Bow +3
- Launcher's Ammo: +3 THAC0, 1d6(missile) damage, strikes as +3.
- All Other Ammo: +3 THAC0

Shortbow of Gesen:
- Launcher's Ammo: +4 THAC0, 2(piercing) + 1d8(electrical) damage, strikes as +4.
- All Other Ammo: +4 THAC0

Firetooth +4
- Launcher's Ammo: +6 THAC0, 1d8+4(missile) + 2(fire) damage, strikes as +4.
- All Other Ammo: +4 THAC0, +4(missile) damage.

Firetooth +5
- Launcher's Ammo: +7 THAC0, 1d8+5(missile) + 2(fire) damage, strikes as +5.
- All Other Ammo: +5 THAC0, +5(missile) damage.

Sling of Seeking +1
- Launcher's Ammo: +2 THAC0, 1d4+3(missile) damage, strikes as +1.
- All Other Ammo: +1 THAC0, +1(missile) damage.

Sling of Everard +5
- Launcher's Ammo: +5 THAC0, 1d4+2(missile) damage, strikes as +5.
- All Other Ammo: +5 THAC0, +1(missile) damage.

I have also added Critical Hit effects to Gesen and the Firetooths so they will duplicate both their physical and electrical/fire damage on a critical hit with their own ammo.
It should be fully compatible with Dee's Enchant the Missile Launchers (Ranged Weapon Tweak).
Edit- fixed more errors