In geopmpy.launcher try to guess the right number of OpenMP threads.
In geopmpy.launcher try to guess the right number of OpenMP threads.

- If the user has not set OMP_NUM_THREADS use MPI and topology
  information to guess the right value.

Change-Id: I5d1301e9f005f4b9d252a8014da4d1233becfc72
Signed-off-by: Christopher M. Cantalupo <9cf3ecca60a3dd7112ab0e7250bedb8a752e3958@intel.com>

geopm/geopm,geopm/geopm,cmcantalupo/geopm,geopm/geopm,cmcantalupo/geopm,geopm/geopm,cmcantalupo/geopm,cmcantalupo/geopm,geopm/geopm,cmcantalupo/geopm