[RFA] Add "inf" alias for "info"

[Pierre Muller]

> >   The proposed patch add "inf" as an alias
> > of "info", saving the hassle of retyping "info"
> > after the message above.
> 
> Why not type just "i"?  It is already an alias for "info", and,
> it's shorter anyway ==> less hassle.

  No really good reasons but,
I used "inf " for years and didn't know "i " worked,
I discovered it while writing the patch!
  But I am too used to "inf " to be able to switch to "i "
easily!

Pierre