Allow RMS shared segment without huge pages

This change allows creation and use of the RMS shared
memory segment in cases where huge pages are not available.
If huge pages are available, RMS will use them as before
this change.

Change-Id: I81909a5ac968a57d66bdcdaf172af470c585bf5c
Closes-Bug: #1366033
Merge "Allow RMS shared segment without huge pages"