Mel script to mess with 2

I posted before a script to mess with, that was a short script, well I've added a UI to it and now its a crap load longer, but there are new features. It will save your cache settings with the file, so if you oversample it will remember the oversampling, etc.
So check it out, I'll make it work for windows this weekend. Right now it's only Linux.

EDIT: now version 2.1 with changes from "Alberto" plus a few extra things that I needed to do like error checking.