some inlined functions in hashtable.hh removed
some inlined functions in hashtable.hh removed

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