Clean up warnings/errors from clang and do simple refactoring.

* Move PrintResults and ComputeCount to test_utils.c
* Modify PrintResults to take an extra "verbose" arg so it's
  self-contained.
* Modify ComputeCount to take an extra "adapt_count" so it's
  self-conttained.
* Update all callers of PrintResults and ComputeCount appropriately.
* Move MAX_FFT_ORDER and MAX_FFT_ORDER_FIXED_POINT to test_util.h.
* Declare TimeCkFFTFFT and TimeCkFFTRFFT in test_fft_time.c.