Montague's Mount: Disable texture hunting

I haven't needed this in a while and I need the up/down keys to scroll
the save list quickly and don't want random textures disabled in the
process.
Montague's Mount: Add spot light shader used on dock
Montague's Mount: Approximate fix for spot lights on dock

Once again I can't find a value that works for all distances from the
shadows, so I chose a value that looks ok from most distances -
unfortunately these shadows are visible from further away, so this
really isn't ideal.