Rearrange how Channel objects are created, in case the user wants to create one directly.  Get rid of an unused dispatch method held over from when it was all hand-written.
Rearrange how Channel objects are created, in case the user wants to
create one directly.  Get rid of an unused dispatch method held over
from when it was all hand-written.

JustinTulloss/harelib,arnaudsj/py-amqplib,JustinTulloss/harelib