Bug fix: "-?" is now recognized as NaN
Bug fix: "-?" is now recognized as NaN

annkupi/picard,broadinstitute/picard,broadinstitute/picard,broadinstitute/picard,annkupi/picard,alecw/picard,nh13/picard,annkupi/picard,alecw/picard,alecw/picard,broadinstitute/picard,nh13/picard,alecw/picard,annkupi/picard,nh13/picard,nh13/picard,broadinstitute/picard