- Added 'R' (capital 'R') command, which can be used to repair a corrupted
  "SMB header" and status header in the *.shd file. The status header
  fields "max_msgs", "max_crcs", and "max_age" are not recovered (just
  initialized to 0) since we don't have those configuration settings in
  smbutil. Modifying the base configuration in SCFG and saving changes
  will recover those values.
- Added '-C' (capital 'C') option: to continue to open a msg base even when
  some forms of SMB header corruption are detected. This option may be used
  in combination with some commands (e.g. 'c' and 'R') to recover a
  corrupted message base.

Command-line options were previously not case-sensistive (all options were
treated the same regardless of letter case) - now, most options are still
treated the same regardless of case, but newer options will be redefining
the uppercase equivalent (e.g. '-C' is now not the same as '-c').