Montague's Mount: Replace profile fix with autofix from shadertool.py

I'm going to see if I can update my fix for this game to remove the
profile hack and use my Unity shadow fix - this is step 1.
Montague's Mount: Fix extra halo in water near rocks

This one needed an extra texcoord adjusted in addition to the auto fix
(IIRC this glitch also happened in the profile fix)