Undeclared function arguments

[K.LAUX]

	YYBACK (i, m)
	int i;
	{
	...
	}

	The reason that 'm' was not declared was that the body of the
function did not reference the variable at all *AND* it was the last
parameter in the formal argument list.  Since arguments are pushed on
the stack from *right* to *left*, there was no need to know its size.

	It would be a different case if:

	YYBACK (i, m, n)
	
	and only i and n were referenced because now the compiler would
*have* to know the size of m in order to correctly reference n on the stack.

--rkl