BUG: Fix missing fragment in ARGOUTVIEWM typemaps.

The argout typemaps of all the ARGOUTVIEWM typemap suites make use of the
free_cap function, defined in the NumPy_Utilities fragment, which was not
listed in the fragment argument of the typemaps.

As a result, the free_cap function is not included in the source generated
code by SWIG, and the code do not compile (unless another typemap including
the missing fragment has been used).