locate plugin with globbing

The locate plugin does not work correctly if the query has globbing characters. eg 'foo*bar' will not return anything even if 'foo bar' exists (and can be found by locate)

the reason appears to be the following:
// Only allow files that contain the query as a substring
// of the file name. It may be faster to use grep, but I've
// tested this and it seems prety snappy.
if (Path.GetFileName (path).ToLower().Contains (query)) {
  results++;
  files.Add (Services.UniverseFactory.NewFileItem (path) as Item);
}

This whole thing is unnecessary.. the "-b" option to locate does what's intended here, without causing the problems that this is causing. I've attached a patch to fix this. Note however that the patch is entirely untested since I don't have compilers etc for C# (but it is such a simple patch that it should not be a problem)

Also it would be nice to have an option that lets me use the regex features of locate. Should I file a separate bug?