[FYI] {ylwrap-refactor} Refactoring (eventual rewriting) of the `ylwrap' script.

[Stefano Lattarini]

Hello automkers.

I'm working on a refactoring (which will turn into a complete rewrite)
of the `ylwrap' script.  This is still related to automake bug#7648 and
PR automake/491

Now, I don't want to keep the ongoing work on this rewrite private, to
avoid bitrotting; but I don't wan't to push it to the 'yacc-work' branch
either, because I'm not yet sure whether it will work out.

So I've created a new public branch `ylwrap-refactor' based off of
yacc-work.  Patches will follow soon(ish).

As usual, comments are appreciated.

Regards,
  Stefano