* value.h (address_of_variable): Add prototype.

	* value.h (address_of_variable): Add prototype.
	(locate_var_value): Remove prototype.

	* findvar.c (read_var_value): Do not attempt to default frame
	to selected frame.
	(locate_var_value): Remove function.
	* valops.c (value_of_variable): Retrieve selected frame for
	symbols that require a frame when called with NULL block.
	* valops.c (address_of_variable): New function.

	* eval.c (evaluate_subexp_for_address): Call address_of_variable
	instead of calling locate_var_value.
	(evaluate_subexp_with_coercion): Likewise.