Fix compatibility with hdf5-1.8.15-pre7
Fix compatibility with hdf5-1.8.15-pre7

gdementen/PyTables,mohamed-ali/PyTables,joonro/PyTables,gdementen/PyTables,rabernat/PyTables,jennolsen84/PyTables,tp199911/PyTables,andreabedini/PyTables,rabernat/PyTables,dotsdl/PyTables,andreabedini/PyTables,rdhyee/PyTables,PyTables/PyTables,jennolsen84/PyTables,tp199911/PyTables,avalentino/PyTables,PyTables/PyTables,dotsdl/PyTables,dotsdl/PyTables,tp199911/PyTables,rabernat/PyTables,rdhyee/PyTables,gdementen/PyTables,andreabedini/PyTables,FrancescAlted/PyTables,FrancescAlted/PyTables,avalentino/PyTables,dotsdl/PyTables,tp199911/PyTables,mohamed-ali/PyTables,jennolsen84/PyTables,jennolsen84/PyTables,PyTables/PyTables,andreabedini/PyTables,mohamed-ali/PyTables,avalentino/PyTables,mohamed-ali/PyTables,rabernat/PyTables,rdhyee/PyTables,joonro/PyTables,FrancescAlted/PyTables,gdementen/PyTables,joonro/PyTables,rdhyee/PyTables,joonro/PyTables