[m-rev.] for review: Improve warnings generated by?--warn-non-tail-recursive

[Zoltan Somogyi]

On Sun, 1 Nov 2015 11:38:49 +1100, Paul Bone <paul at bone.id.au> wrote:
> > I will look at it post commit.
> > 
> 
> Okay done.

I think the diff was fine, but I made it less conservative,
by committing the attached diff.