Issue: RANGE-OF-COUNT-KEYWORD

[vanroggen%aitg.DEC@decwrl.dec.com]

After asking both implementors and users within DEC, I got quite a
variety of opinions.  However, I believe the plurality was in favor
of treating a negative :count value as an error.  [Allowing only
NIL or integers was just fine, of course.]

So even though I personally prefer the proposal as written, I think I
should support a slightly different version which defines negative
values of :COUNT to be in error.

			---Walter