Support C< $coderef->($x,$y) >

Support C< $coderef->($x,$y) >

Randal Schwartz said:
> Some time in October, 1994, Larry Wall said:
> > : All other references you can follow with ->, what about code refs?
> > Aw, look, I'd really like that feature in, but I think it's a bit
> > too close to the release for that.
> Hey Chip,
> Look, Larry said he'd really like that feature

Larry said that?  That change is like two lines, it's in!

Tricked-into-doing-by: Randal Schwartz <merlyn@stonehenge.com>