DRAKHYSYS INFINITY TILESET WORKBENCH V4.8.8.84

MAP RESIZER SAME-OVERRIDE BMP FIX
- SR.BMP / HT.BMP / LM.BMP are never written in-place.
- The source is fully decoded and closed.
- Resized BMP is written to a temporary sibling file.
- os.replace() then replaces the destination, including when source == destination.
- Window title updated to V4.8.8.84 so the running build is identifiable.
