Okay, I've had it with answering newbie questions about why plpgsql

Okay, I've had it with answering newbie questions about why plpgsql
FOR loops are giving weird syntax errors.  Restructure parsing of FOR
loops so that the integer-loop-vs-query-loop decision is driven off
the presence of '..' between IN and LOOP, rather than the presence
of a matching record/row variable name.  Hopefully this will make the
behavior a bit more transparent.