SetHoldType -> SetWeaponHoldType

No idea who coded the new weapon hold type setting but it's horrible and
broken.
Fixed nail health lower if nailed while holding.
Correction to controls_ghoul
Merge branch 'master' of https://github.com/JetBoom/zombiesurvival

Conflicts:
	gamemodes/zombiesurvival/entities/weapons/weapon_zs_zebulletstorm.lua