Added file-backed disk image implementation for use with Trident disk images, did some basic refactoring of disk load/unload logic, added support for creating new (empty) disk images for both Trident and Diablo disks.
Added UI for loading/unloading/creating up to 8 trident packs; added blank Diablo pack creation UI. (Both Windows and *nix interfaces.)
Added configuration support for same (both Windows and *nix.)
Small correction to Print output path browsing logic.
Fixed Windows installer, now places the right ROMs for Alto I configurations in the right place.
Fixed issue when starting up with corrupted configuration. Corrupted configuration is ignored and ContrAlto will run with default config.
