overlapstats.xml: The errors file now contains a newline at the end. The error...

overlapstats.xml: The errors file now contains a newline at the end. The error count is now calculated regardless of whether or not the ERRORS parameter was specified. 

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@3893 41f8697f-d340-4b68-9986-7bafba869bb8