Tutorial code to implement SHMEM over OFIWG libfabric

 * This tutorial was presented at PGAS 14 (http://nic.uoregon.edu/pgas14/index.php)
   and will be maintained as long as it serves useful educational purposes.
 * Uses the scalable fabric interfaces as defined by OFIWG
   We should be maintaining this as it tracks toward a 1.0 release at end of 2014
 * Includes a powerpoint tutorial (slightly out of date at the moment)
 * Includes process manager loader for PMI interfaces
 * Enough implementation to run the openshmem reference sping test
 * Demonstrates simple use of RMA, tagged, and counters
 * Demonstrates simple symmetric heap allocation technique
 * Thanks to Mike Blocksome (michael.blocksome@intel.com) for
   implementing the build framework and updating to the latest code.

Signed-off-by: Charles J Archer <charles.j.archer@intel.com>