Version 1.5.4
    
    - Fix the keyctl padd command and similar to handle binary input.
    - Make keyctl show able to take a keyring to dump.
    - Make keyctl show able to take a flag to request hex key IDs.
    - Make keyctl show print the real ID of the root keyring.
    - Allow /sbin/request-key to have multiple config files.
    - Adjust the manual page for 'keyctl unlink' to show keyring is optional.
    - Add --version support for the keyutils version and build date.