In qmos, improved map file capabilities. Please see the help pages inside of...

In qmos, improved map file capabilities. Please see the help pages inside of qmos (Help -> qmos Help) for descriptions and explanations of the new functionality. Fixes #1034.

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@4997 41f8697f-d340-4b68-9986-7bafba869bb8