illumos gate

We directly pass inquiry data as a format string to cmn_err(). This doesn't seem like a good thing to be doing.

I also - briefly - tried turning on -Wformat-nonliteral in uts/ to catch other instances of this anti-pattern. Unfortunately there is a whole bunch of noise there. It might be nice one day to work through it.

I forgot to mention, Mike Gerdts discovered this.