Log Message:
Update to 3.0.1:
* Some speed improvements in SIMD code.

* --without-cycle-counter option is removed.  If no cycle counter is found,
  then the estimator is always used.  A --with-slow-timer option is provided
  to force the use of lower-resolution timers.

* Added missing static keyword that prevented simultaneous linkage
  of different-precision versions; thanks to Rasmus Larson for the bug report.

* Corrected accidental omission of f77_wisdom.f file; thanks to Alan Watson.

* Removed non-portable use of 'tempfile' in fftw-wisdom-to-conf script;
  thanks to Nicolas Decoster for the patch.

* Added 'make smallcheck' target in tests/ directory, at the request of
  James Treacy.