Fix typo in liboshmem name
OSHMEM: sshmem mmap: use MAP_PRIVATE instead of MAP_SHARED

It looks like using MAP_PRIVATE instead of MAP_SHARED greatly
speeds up infiniband memory registration.

Change-Id: Id7089f58458ef8fff4034a2c4707d31f7e8b6694
Merge pull request #221 from opoplawski/master

Fix typo in liboshmem name