base: add an accessor and operators ==,!= to address ranges (transplanted from d95e81d44e36e9a97d1a639e899c4231a6f5448a)
base: add an accessor and operators ==,!= to address ranges
(transplanted from d95e81d44e36e9a97d1a639e899c4231a6f5448a)

andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin,andrewfu0325/gem5-aladdin