Supersample.SuperCrazy and supersample.SuperCrazy

A compatibility failure between the downloaders 'check if jar exists' file checker and the robocode 'load given robot jar' file loader. The former is case insensitive (probably had a good reason for it at the time) where as the latter is not.

Now that I think about it, the former may just be a "check if robot exists in robot database", rather then a file checker.