2.38 (14 Mar 2001):
  Added optional 'mixed case' in readiness for RockRidge support.
  Added support for memory being managed in a dynamic area.
2.39 (03 Apr 2001):
  Fixed 'MixedCase' support.
  Added 'RockRidge' filenaming support.
  Added 'comma naming' support.
2.40 (05 Apr 2001):
  Added debugging code.
  Fixes for 'MixedCase' operation.
2.41 (05 Apr 2001):
  CDFS booting now works (for drive 0)
2.42 (05 Apr 2001):
  Fix for non-RockRidge CDs locking.
2.43 (11 Apr 2001):
  Added Joliet support.
  Additional debugging in various routines.
2.44 (11 Apr 2001):
  Removed the RISC_OS logical variable.
  Fixed incorrect use of CDFSMessages$Path.
2.45 (11 Apr 2001):
  Removed many unneeded hashes and macros.
2.46 (11 Apr 2001):
  Added support for PVD in the last data track on the disc.
  Fixed a few Joliet/debug problems.
2.47 (13 Apr 2001):
  Fixed space stripping code to handle two character disc names.
2.48 (20 Apr 2001):
  Fixed bug in *WhichDisc which prevented it using a parameter.
2.49 (27 Apr 2001):
  Slight change to the boot procedure.
2.50 (28 Apr 2001):
  Fix for bugs in use of LocatePVD reading the wrong drive.
2.51 (28 May 2001):
  Added character conversion for RISC OS files
2.52 (06 Jun 2001):
  Fixed multi-mode discs (specifically VCDs)
2.54 (07 Sep 2001):
  Disabled debug option.
2.55 (06 Mar 2002):
  Added support for drives/drivers failing EnquireDataMode.
2.56 (16 Mar 2002):
  Added support for potentially UDF discs.
2.57 (15 May 2002):
  Fixed Dismount code for closing filer windows.
