Added a check in ktable_get to see if the user passed a pylong
Added a check in ktable_get to see if the user passed a pylong

kdmurray91/khmer,F1000Research/khmer,Winterflower/khmer,ged-lab/khmer,kdmurray91/khmer,kdmurray91/khmer,F1000Research/khmer,F1000Research/khmer,jas14/khmer,souravsingh/khmer,jas14/khmer,Winterflower/khmer,souravsingh/khmer,souravsingh/khmer,ged-lab/khmer,Winterflower/khmer,ged-lab/khmer,jas14/khmer