Improve h_to_string
Improve h_to_string

yantrabuddhi/atomspace,misgeatgit/atomspace,ArvinPan/atomspace,ArvinPan/atomspace,misgeatgit/atomspace,inflector/atomspace,inflector/atomspace,yantrabuddhi/atomspace,rTreutlein/atomspace,inflector/atomspace,rTreutlein/atomspace,AmeBel/atomspace,AmeBel/atomspace,yantrabuddhi/atomspace,inflector/atomspace,yantrabuddhi/atomspace,misgeatgit/atomspace,AmeBel/atomspace,rTreutlein/atomspace,inflector/atomspace,yantrabuddhi/atomspace,misgeatgit/atomspace,AmeBel/atomspace,AmeBel/atomspace,misgeatgit/atomspace,ArvinPan/atomspace,rTreutlein/atomspace,rTreutlein/atomspace,ArvinPan/atomspace