{AH} fix BAM_DATADIR
{AH} fix BAM_DATADIR

kyleabeauchamp/pysam,pysam-developers/pysam,kyleabeauchamp/pysam,pysam-developers/pysam,kyleabeauchamp/pysam,kyleabeauchamp/pysam,pysam-developers/pysam,kyleabeauchamp/pysam,pysam-developers/pysam