The glass itself should be impervious to any oil based solvent or any solvent for that matter. Getting it on the putty and trim would be the problem. I doubt if gently scrubbing with 0000 steel wool would scratch the glass. I wonder if the haze is residue from someone spraying the house with something years ago. You might try putting a dab of paint remover on a spot and see if that takes it off. I cant imagine it hurting the glass. If the haze is micro-pitting you gotta a problem.