Dict tests now pass
backup
initial attempt at switching to a const char * dict
passes all tests
go back to using strings in the dictionary to avoid the memory leaks
add return vals for getProps on ROMol, Atom, and Bond;
use a variable to store computed prop names
start using the alternate getProp form
Merge pull request #74 from rdkit/DictImprovements_15July2013

Dict improvements 15 july2013