Changed BamAlignmentSupportData from private to public.
Changed BamAlignmentSupportData from private to public.

This will eliminate the oft-reported compilation issue.

arq5x/bedtools2,arq5x/bedtools2,arq5x/bedtools2,arq5x/bedtools2,jmarshall/bedtools2,jmarshall/bedtools2,jmarshall/bedtools2,jmarshall/bedtools2,arq5x/bedtools2,jmarshall/bedtools2