Largest contiguous homopolymer run of the variant allele
Calculates the length of the largest contiguous homopolymer run of the variant allele in either direction on the reference.
This can only be computed for bi-allelic sites.
This needs to be computed in a more accurate manner. We currently look only at direct runs of the alternate allele adjacent to this position.
GATK version 2.8-1-g2a26ec9 built at 2013/12/06 16:54:02.