tree-vrp.c (extract_range_from_unary_expr): Do not special case symbolics or VR_VARYING ranges for ABS_EXPR.

	* tree-vrp.c (extract_range_from_unary_expr): Do not special case
	symbolics or VR_VARYING ranges for ABS_EXPR.
	* wide-int-range.cc (wide_int_range_abs): Return positive numbers
	when range will wrap.

From-SVN: r264356