Minor change in philosophy: if a SMART command fails or the device

    appears incapable of a SMART command that the user has asked for,
    complain by printing an error message, but go ahead and try
    anyway.  Since unimplemented SMART commands should just return an
    error but not cause disk problems, this should't cause any
    difficulty.

    Added two new flags: q and Q.  q is quiet mode - only print: For
    the -l option, errors recorded in the SMART error log; For the -L
    option, errors recorded in the device self-test log; For the -c
    SMART "disk failing" status or device attributes (pre-failure or
    usage) which failed either now or in the past; For the -v option
    device attributes (pre-failure or usage) which failed either now
    or in the past.  Q is Very Quiet mode: Print no ouput.  The only
    way to learn about what was found is to use the exit status of
    smartctl.

    smartctl now returns sensible values (bitmask).  See smartctl.h
    for the values, and the man page for documentation.


git-svn-id: https://smartmontools.svn.sourceforge.net/svnroot/smartmontools/trunk@88 4ea69e1a-61f1-4043-bf83-b5c94c648137