bin/mined cleanup stage2

[Matthew Dillon]

:this patch is based on
:http://leaf.dragonflybsd.org/mailarchive/submit/2005-04/msg00174.html
:
:simply constify strings in this stage.  now bin/mined is WARNS 6 clean.
:please review them
:
:--=20

    For some reason none of the files will patch cleanly.  Could you
    regenerate it and make sure it 'patches' against the head of the CVS
    tree ?

					-Matt