Add bandwidth stats and more display cleanups
Add bandwidth stats and more display cleanups

-B has been changed to -s.  -s will cause the execution time to print
along with the barrier wait times.

The test will now show BW like this by default:
0: swL-b-    25.669 MiB/s
1: swD---    34.492 MiB/s
2: SrD---     2.333 GiB/s
3: srL---     2.333 GiB/s

Output with -s:
0: swL-b-     1.670 MiB/s      2.92  <0.1774,0.1873,0.2480:7>
1: swD---    16.062 MiB/s      0.30  <0.1784,0.1800,0.2419:31>
2: SrD---    30.517 MiB/s      0.16  <0.1457,0.1422,0.2018:31>
3: srL---    32.134 MiB/s      0.15  <0.1458,0.1440,0.2101:29>
4: swDf--    17.438 MiB/s      0.28  <0.1811,0.1684,0.3165:15>
5: srL---    20.015 MiB/s      0.24  <0.1525,0.1560,0.1880:27>
6: SrD---    34.875 MiB/s      0.14  <0.1431,0.1393,0.2160:31>
7: RrD--h    33.909 MiB/s      0.14  <0.1173,0.1160,0.1579:15>

The order of the barrier stats has been changed to:
AVG, MEDIAN, MAX, (max rank)

00pauln00/yapio,00pauln00/yapio