tree.c (array_type_nelts, [...]): Replace build with build2.

tree.c (array_type_nelts, [...]): Replace build with build2.

	* tree.c (array_type_nelts, save_expr, substitute_in_expr,
	get_unwidened, get_narrower): Replace build with build2.
	* fold-const.c (negate_expr, associate_trees, size_binop,
	fold_convert, eval_subst, omit_one_operand, invert_truthvalue,
	pedantic_omit_one_operand, distribute_bit_expr,
	make_bit_field_ref, optimize_bit_field_compare,
	decode_field_reference, range_binop, make_range,
	build_range_check, fold_range_test, fold_truthop,
	optimize_minmax_comparison, extract_muldiv_1,
	fold_binary_op_with_conditional_arg, fold_mathfn_compare,
	fold_inf_compare, fold_single_bit_test, fold,
	fold_relational_hi_lo, nondestructive_fold_binary_to_constant):
	Likewise replace build with either build2 or build3.

From-SVN: r82083