Update v4.4.0_f7

Happy New Year! Here's a selection of fixes for v4.4.0 ... * ADDED: Disk drive LED activity light, compatible with VIC-20 and more cores coming soon. * FIXED: Some more PC keys not available for use by keyboard based systems. * FIXED: A-Z jump list is now case insensitive. Fixes duplicate letter entries. * FIXED: Minor graphical glitch when tool options panel is collapsed. * FIXED: When on the viewport layout dialog, opening the viewport type selection popup menu then dragging the dialog now auto-closes the popup. * ADDED: Display 'fix' version number suffix (in this case, '_f7') if we're a patch release. * FIXED: Crash bug when starting "Forgotten Realms: Unlimited Adventures"(DOS) via Game Link. Thanks hercxena! * FIXED: Use the default map theme for new maps and regions that are automatically created during Game Link. * FIXED: Basic 'block' terrain style not visible on the brush overlay next to the other standard styles. * FIXED: Corrected a minor error in the Game Link profile for "Metroid 2", thanks to Grauken for this!!