Add i0 kinds to hdf5_kinds_t.
Add i0 kinds to hdf5_kinds_t.

It's convenient to know which type i0 without having to check if i0 is
int_32 or int_64.  A little bit of laziness...

hande-qmc/hande,ruthfranklin/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande