In automos, fixed a border condition that caused only a few samples of an...

In automos, fixed a border condition that caused only a few samples of an input image to be put into an output mosaic. The trigger for this condition was an input image that spanned more than the 0-360 domain by just a sample or two on the 0 side (started at -0.000?? degrees longitude instead of zero). Other cases of spanning more than the world - or just crossing the seam - could have exhibited problems. Fixes #967.

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@4558 41f8697f-d340-4b68-9986-7bafba869bb8