Need more space for specification of longer file paths

I've got a requirement that uses a number of tokens to create the file path that we'll be saving our files to. I've made a patch file that allows up to 600 character long file paths which should be plenty. Unfortunately, I can't figure out how to get the width of the file path window to open wider, the #size tag isn't adjusting it as I would expect, maybe someone else has insight about how to fix that. However, this patch does allow you to set longer file paths.