Can't write one-element ndarray in HDF5

Created by: siebenkopf

When I try to write a single-element numpy.ndarray to HDF5File, and read it again, the type of the variable changes:

> import bob, numpy
> f = bob.io.HDF5File("t.hdf5", "w")
> a = numpy.ndarray((1,), dtype=numpy.int)
> type(a)

type 'numpy.ndarray'

> f.set("a", a)
> b = f.read("a")
> type(b)

type 'int'

The point is that it works well with 2-element arrays, and I want to write ndarrays of different sizes (also with a single element). Currently, this is not supported.