v3.8a

Release Notes:

• USB: Fix buffer overflow when parsing string descriptors
  • Fixes crash with recent SanDisk Ultra Fit drives
• HxC Compat, v8-FF: Fixes startup crash on Atari ST
• Amiga: Fixes for "interface = amiga" setting
• TR-DOS (TRD): Fix geometry when TR-DOS header is incomplete
• Quick Disk: Larger read/write window in default blank image
• GCC9 build fixes