fixed python/setup.py to no longer contaminate extra_objs with header files
fixed python/setup.py to no longer contaminate extra_objs with header files

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