Committing updated CAEBAT plugins and corresponding tests as well as new
IPS Reader and Writer in org.eclipse.ice.io. These updates come from
patches submitted by Andrew Bennett on bug tickets 452154, 452156, and
452159. Since each of these patches was less than 1000 lines, no CQ
required. 

Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>