* eval.c (evaluate_subexp): Fix OP_ARRAY, remove code that

	* eval.c (evaluate_subexp):  Fix OP_ARRAY, remove code that
	implied that "no side effects" was nonfunctional.
	* eval.c (evaluate_subexp):  Add BINOP_CONCAT case to deal with
	character string and bitstring concatenation.
	* expprint.c (dump_expression):  Add case for BINOP_CONCAT.
	* expression.h (exp_opcode):  Add BINOP_CONCAT.
	* gdbtypes.h (type_code):  Add TYPE_CODE_BITSTRING.
	* language.c (string_type):  Add function to determine if a type
	is a string type.
	* language.c (binop_type_check):  Add case for BINOP_CONCAT.
	* valarith.c (value_concat):  New function to concatenate two
	values, such as character strings or bitstrings.
	* valops.c (value_string):  Remove error stub and implement
	function body.
	* value.h (value_concat):  Add prototype.
	**** start-sanitize-chill ****
	* ch-exp.y (operand_3):  Add actions for SLASH_SLASH (//).
	* ch-exp.y (yylex):  Recognize SLASH_SLASH.
	* ch-lang.c (chill_op_print_tab):  Add SLASH_SLASH (//) as
	BINOP_CONCAT.
	**** end-sanitize-chill ****