Renamed Dummy-class to Struct.
Renamed Dummy-class to Struct.

committer: Bob Farrell <48181acd22b3edaebc8a447868a7df7ce629920a@keys.(none)>

kdart/bpython,5monkeys/bpython,wevial/bpython,kdart/bpython,aktorion/bpython,wevial/bpython,aktorion/bpython