PROG: Fixed issue with macs having slightly different iteration values in...

PROG: Fixed issue with macs having slightly different iteration values in jigsaw observation mode tests (case01, observation_mode_cholmod). Fixed tolerance value for RMS (from 2e-11 to 3e-11) for jigsaw apollo test. References #4072.

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@6894 41f8697f-d340-4b68-9986-7bafba869bb8