Remember Directory While Importing roms

[Kevin Connolly (cammelspit)]

Would be nice to remember the directory last used while importing roms. Currently, LB just goes right to the LB games directory but my roms are on an entirely different drive. Plus, unless you had already imported the roms before, they won't be in the LB directory for most users anyways. Would just make importing easier I think and it should be pretty simple to implement. Perhaps allowing the user to make their own directory default?

Thanks!