DownsampleSam supports piping in. (#839)
DownsampleSam supports piping in. (#839)


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