New genotype and somaticgenotype to store more intermediate statistics

- Added new CalledGenotype and CalledSomaticGenotype (and Kryo serializers) to save more intermediate variant calling information used for filtering

This also makes a distinctions between germline and somatic calls to the filters can be applied appropriately.  Part of breaking down #147 and is dependent on #162 
Yea, I think since the commit is still here, I *believe* I can rebase now, which should say now wipe that commit and I can push *without* -f ... going to try now.