Fixed moc2isis, lronac2pds, and some automated tests to not leave around extra...

Fixed moc2isis, lronac2pds, and some automated tests to not leave around extra temporary files that were originally intended to be deleted. Fixes #1009.

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@4857 41f8697f-d340-4b68-9986-7bafba869bb8