libio patch

[Eugene Mamchits]

Neal Becker wrote:
> 
> I'm anxious to try this patch.  But which snapshot is it for?

Ah!
I made some changes before and forgot about that...

I additional need to remmeber that `long long int' == `long long',
and `dev_t' may be calculated correctly too.

The final patch follows.
-- 
+--  .   .  --+----------------------------------+
|    |\-/|    | Eugene Mamchits                  |
|    |OvO|    | mailto:eugin@ips.ras.ru          |
|   /\\.//\   | System and network administrator |
|  //\\|//\\  | Mathematical Branch              |
|  Vv\\|//vV  | Russian Academy of Sciences      |
+--  `` ''  --+----------------------------------+