- don't require compile-time switch, controlled via 'optionalArgs'
  argument to CFS setup function, timing data stored in (opaque)
  FstatInput structure
- API functions to extract and dump timing data to file
- Adapted ComputeFstatBenchmark code to output timing info in both Demod and Resamp cases
- refs #3133
Original: f3a6c0bea5c03301a4d648f3bbe5b2bca1bc815d