gdb/

	gdb/
	* value.h (value_available_contents_eq): Declare.
	* value.c (find_first_range_overlap): New function.
	(value_available_contents_eq): New function.
	* valprint.c (val_print_array_elements): Use
	value_available_contents_eq.
	* ada-valprint.c (val_print_packed_array_elements): Use
	value_available_contents_eq.
	* jv-valprint.c (java_value_print): Use
	value_available_contents_eq.