[m-rev.] for review: allow pragmas to accept pred() and func() wrappers around symname/arity

[Zoltan Somogyi]

On Wed, 5 May 2021 21:02:17 +1000 (AEST), Julien Fischer <jfischer at opturion.com> wrote:
> It might also be worth replacing int with uint at some point, since arities
> cannot be negative.  (Actually, given the documented limitations on the
> arities of predicates, uint16 might be a better choice since that may also
> result in opportunities for argument packing in some of the compiler data
> structures.)

I added a comment about this.
 
> The diff looks ok.

Thank you. I was busy yesterday with other things, so I will add
the invalid tests after committing this.

Zoltan.