cppexp.c (LOGICAL): Delete macro.

	* cppexp.c (LOGICAL): Delete macro.
	(_cpp_parse_expr): Do not use UNARY for unary +.  Implement ||
	and && directly.

	* cpphash.c (HASHSIZE): Increase to 4096.
	(struct hashdummy): Add hash field.
	(eq_HASHNODE): Compare unreduced hashes, then lengths, then
	the string values using memcmp.
	(cpp_lookup): Set dummy.hash.

From-SVN: r34994