Fix samtools binary for Linux.
Fix samtools binary for Linux.

Was zipped incorrectly to include dir. Modified it to only zip contents
of dir, same as Darwin version.

woodymit/millstone_accidental_source,woodymit/millstone,churchlab/millstone,woodymit/millstone_accidental_source,churchlab/millstone,woodymit/millstone,churchlab/millstone,woodymit/millstone_accidental_source,woodymit/millstone,woodymit/millstone,churchlab/millstone,woodymit/millstone_accidental_source