Squish Coco (http://www.froglogic.com/squish/coco/) support is now available....

Squish Coco (http://www.froglogic.com/squish/coco/) support is now available. This tool provides test analysis capabilities (how well our tests are testing Isis). Fixes #1044.

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@4637 41f8697f-d340-4b68-9986-7bafba869bb8