Added craype-hugepages16M module to env, corrected psubmit.opt, corrected bug in checks, some cosmetic changes.

A bunch of small changes: polishing the build and output; peertopeer MPI: now uni- and bi-directional setting and better comm patterns.

Module names updated. Pinning of memory made a runtime option. Corrected allocation of pinned memory. Output rework WIP.

1) MPI compiler change mpicxx->CC; 2) workaround for intra-node deadlock removed; 3) updated for new lumi-g dedicated core conf.