pandas < 0.8.0 HDFStore files have Cython 32/64 bit issues
``````
# Save to hdf5.
kw = dict(table=True, compression='zlib')
store = pandas.HDFStore('ADCP_series.h5', 'w')
store.put('ADCP', ADCP, **kw)
store.put('Ancillary', Anc, **kw)
store.close()

On my Enthought Python Distribution I can load it fine (also with my previous setup),

pandas.__version__
Out[2]: '0.6.1'
tables.__version__
Out[4]: '2.3.1'

But on pandas dev,
pandas.__version__
Out[8]: '0.8.0.dev'

I get the following:

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
----> 1 ADCP = f['ADCP']

/usr/lib/python2.7/site-packages/pandas/io/pytables.pyc in __getitem__(self, key)
   181
   182     def __getitem__(self, key):
--> 183         return self.get(key)
   184
   185     def __setitem__(self, key, value):

/usr/lib/python2.7/site-packages/pandas/io/pytables.pyc in get(self, key)
   280         try:
   281             group = getattr(self.handle.root, key)
--> 282             return self._read_group(group)
   283         except AttributeError:
   284             raise

/usr/lib/python2.7/site-packages/pandas/io/pytables.pyc in _read_group(self, group, where)
   792         kind = _LEGACY_MAP.get(kind, kind)
   793         handler = self._get_handler(op='read', kind=kind)
--> 794         return handler(group, where)
   795
   796     def _read_series(self, group, where=None):

/usr/lib/python2.7/site-packages/pandas/io/pytables.pyc in _read_wide_table(self, group, where)
   552
   553     def _read_wide_table(self, group, where=None):
--> 554         return self._read_panel_table(group, where)
   555
   556     def _write_index(self, group, key, index):

/usr/lib/python2.7/site-packages/pandas/io/pytables.pyc in _read_panel_table(self, group, where)
   843
   844         if len(unique(key)) == len(key):
--> 845             sorter, _ = lib.groupsort_indexer(key, J * K)
   846
   847             # the data need to be sorted

/usr/lib/python2.7/site-packages/pandas/_tseries.so in pandas._tseries.groupsort_indexer (pandas/src/tseries.c:49539)()

ValueError: Buffer dtype mismatch, expected 'int64_t' but got 'long'```
``````
