Archive dialog - prioritize rom results

[GoogleCodeExporter]

WHen opening a rom from an archive (such as .7z) with multiple entries, make an 
algorithm to push the probably good results to the top and the bad ones to the 
bottom.


For instance, [b] should be at the bottom, (U) [!] patterns should be 
preferred, exact matches to the archive name are preferred, etc.

Original issue reported on code.google.com by adeli...@tasvideos.org on 4 Mar 2012 at 2:42