interface between SAMDataSource and IntervalSharder that needs to stay around
until the original BAM sharder is retired. Will add a JIRA to fix design
flaw.
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@5661 348d0f76-0448-11de-a6fe-93d51630548a