[smartmontools-support] Expose DEVICESCAN in smartctl

[Alexander S. <ash...@gm...>]

Hello,

I looked at smartmontools' os_win32.cpp sources and
saw that there is a DEVICESCAN implementation which
can detect some non-trivial stuff (like 3ware controllers).

IIRC, the functionality is available only in smartd, but not
in smartctl, right? Are there any plans on exposing it in smartctl?
For example, an option (say, --scan) would print something like

Under win32:
pd0       ata
sda,0    3ware
sda,1    3ware

(The first line being an ordinary drive, the second and third - 2
drives on 3ware controllers). I'm not sure about the second
column - I guess it should specify something that would
be given to "-d" parameter, so in this case it would be "auto".

For linux, it would be:
/dev/sda   auto
/dev/twa0   3ware,0
/dev/twa0   3ware,1

The format could be different, of course.
What do you think?

Thanks,
Alexander