-- getToolkit().subContextFromSampleProperty(): filters a VariantContext to genotypes that come from samples that have a given property value
-- getToolkit().getSamplesWithProperty(): gets all samples with a given property
-- getToolkit().getSamplesFromVariantContext(): sample objects that are referenced by name in a VariantContext
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@4361 348d0f76-0448-11de-a6fe-93d51630548a