Added linux version of the library containing fft implementation. Added...

Added linux version of the library containing fft implementation. Added b25.matfunc-1 benchmark computing fft, as well as two matcal benchmark that are currently supported,  to the benchmark suite.

mx.fastr/mx_fastr.py

@@ -257,8 +257,8 @@ def _bench_harness_body(args, vmArgs):
              'shootout.knucleotide', 'shootout.mandelbrot-ascii', 'shootout.nbody', 'shootout.pidigits',
              'shootout.regexdna', 'shootout.reversecomplement', 'shootout.spectralnorm',
              'b25.bench.prog-1', 'b25.bench.prog-2', 'b25.bench.prog-3', 'b25.bench.prog-4', 'b25.bench.prog-5',
-             'b25.bench.matcal-1', 'b25.bench.matcal-2',
-             'b25.bench.matfunc-2', 'b25.bench.matfunc-3', 'b25.bench.matfunc-4']
+             'b25.bench.matcal-1', 'b25.bench.matcal-2', 'b25-bench.matcal-3', 'b25-bench.matcal-4',
+             'b25.bench.matfunc-1', 'b25.bench.matfunc-2', 'b25.bench.matfunc-3', 'b25.bench.matfunc-4']
     if vmArgs:
         marks = ['--J', vmArgs] + marks
     return rbench(marks)