PIR syntax changes WRT arg & result passing

[Chip Salzenberg]

I'm about to update the PIR docs, but here's the short version:

 * the "prototyped" and "non_prototyped" pragmas for subroutines
   are both gone; the concept of 'prototyped' is obsolete.  Just
   remove them those pragmas entirely.

 * if you used to say ".flatten foo" (or ".flatten_arg foo"),
   say ".arg foo :flat" instead.  This syntax also works in the
   function call syntax, e.g.

        $P1 = "yoursub"($P2 :flat)

-- 
Chip Salzenberg <[EMAIL PROTECTED]>