1.101 Update code comments.

1.101   Update code comments.

1.100   Update code comments.

1.99    DEFERRED
1.98    DEFERRED

1.97    Timeout while polling is in ms not ticks.  [This should be
        computationally equivalent to the code that was there before, but
        is far simpler].

1.96    DEFERRED - Abort race.  It is unclear whether an xfer can be
                   aborted multiple times.

1.95    DEFERRED (interrupt fixes that may still be buggy)
1.94    DEFERRED (interrupt fixes that may still be buggy)
1.93    DEFERRED (interrupt fixes that may still be buggy)
1.92    DEFERRED (interrupt fixes that may still be buggy)

1.91    NOT APPLICABLE (whitespace cleanup)

1.90    WILL NOT BE APPLIED - This rev tries to setup some sort of
        memory reserve but doesn't really solve any problems.  A
        reserve is useless if it is not operated as a circular
        resource-limited pipeline.

1.89    Don't error out if the number of companion controllers is wrong, just
        complain and go ahead.