fixed Hashbits.update test
fixed Hashbits.update test

ged-lab/khmer,F1000Research/khmer,jas14/khmer,Winterflower/khmer,jas14/khmer,souravsingh/khmer,ged-lab/khmer,jas14/khmer,Winterflower/khmer,souravsingh/khmer,ged-lab/khmer,F1000Research/khmer,F1000Research/khmer,souravsingh/khmer,Winterflower/khmer