stale when called to reset rate control state causing us to
pickup an invalid index, check for this and skip 'em (things
will eventually get fixed up so this is not harmful)
an ap in 11g with protection enabled
o correct rate selection when operating in 11g with protection when no
packets have been sent yet (from John Bicket)
o track api change to get first descriptor and use it to collect the frame
length for calculating the state bin
o add more debugging and shuffle some existing debugging to give more info
o bump version to distinguish bug fixes