undo changes to test for arc dist
undo changes to test for arc dist

ljwolf/pysal_core,TaylorOshan/pysal,pedrovma/pysal,hasecbinusr/pysal,ljwolf/pysal,pastephens/pysal,TaylorOshan/pysal,sjsrey/pysal_core,sjsrey/pysal_core,lixun910/pysal,jlaura/pysal,sjsrey/pysal_core,hasecbinusr/pysal,pysal/pysal,ljwolf/pysal,lanselin/pysal,ljwolf/pysal_core,sjsrey/pysal,TaylorOshan/pysal,ljwolf/pysal_core,weikang9009/pysal,hasecbinusr/pysal,lixun910/pysal,pastephens/pysal,jlaura/pysal,jlaura/pysal,lixun910/pysal,pastephens/pysal,ljwolf/pysal