AutoReg.h: 2010-07-20 Jeannie Walldren - Added ability to set a valid...

AutoReg.h: 2010-07-20 Jeannie Walldren - Added ability to set a valid percentage for the search chip's subchip. Updated documentation and unitTest.  

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@236 41f8697f-d340-4b68-9986-7bafba869bb8