From 8b1eb6040a6b99af7de7193a6a6eaed2ee619457 Mon Sep 17 00:00:00 2001
From: Ryan Poplin <rpoplin@broadinstitute.org>
Date: Tue, 14 Oct 2014 12:15:23 -0400
Subject: [PATCH] In ROCCurveNA12878, if VQSLOD value is not present default to
 using the QUAL field instead to rank the variants.