• Added a workaround for filesystems with a broken implementation of
  posix_fadvise() that returns unexpected error codes.
  This issue was specifically reported with the F2FS filesystem.
  This change is primarily intended for package maintainers who need to run
  "make check" on build servers that may use such filesystems.
  No update is required if you have not encountered an error message about
  failure to advise files.
• Log the modification time of the content file in probe and other commands.
  This log entry is used by SnapRAID Daemon 1.6.