* c-common.c (binary_op_error): Don't allow LROTATE_EXPR,
	RROTATE_EXPR or unknown code.
	* c-typeck.c (build_binary_op): Don't allow RROTATE_EXPR,
	LROTATE_EXPR, MAX_EXPR, MIN_EXPR, UNORDERED_EXPR, ORDERED_EXPR,
	UNLT_EXPR, UNLE_EXPR, UNGT_EXPR, UNGE_EXPR, UNEQ_EXPR, LTGT_EXPR
	or unknown code.

From-SVN: r90697