Note: the -L argument takes both interval strings and filenames. If you specify an interval string that is also a file, an error will be thrown to move the file: ie. if you have a file "chr1" in the parent directory, GATK will ask you to move/delete it. But, this only happens with interval string arguments, NOT with intervals that are contained in files, which is a majority of the use case.
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@3602 348d0f76-0448-11de-a6fe-93d51630548a