Map all occurrences of "item" to "row".  Dumb?  Possibly.  But also consistent with our usage everywhere else.  Begin the conversion to having the skip list routines know more about rows by using "struct ctable_baseRow" instead of void.
Map all occurrences of "item" to "row".  Dumb?  Possibly.  But also consistent
with our usage everywhere else.  Begin the conversion to having the skip list
routines know more about rows by using "struct ctable_baseRow" instead of void.

flightaware/speedtables,flightaware/speedtables,flightaware/speedtables,flightaware/speedtables