[pymvpa] Segmentation fault - macOS 11.6, Python 2.7.16, pymvpa from latest gh clone

[John Johnson]

After cloning the repo from GitHub, then building and installing as instructed, importing mvpa2.suite or mvpa2.tutorial_suite causes a segmentation fault.

mvpa2.suite:
```
(env_py2) Johns-iMac-Pro :: /Volumes/Data/Tutorials » python
Python 2.7.16 |Anaconda, Inc.| (default, Sep 24 2019, 16:55:38)
[GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import mvpa2.suite
/Users/john/opt/anaconda3/envs/env_py2/lib/python2.7/site-packages/mvpa2/base/hdf5.py:40: H5pyDeprecationWarning: The h5py.highlevel module is deprecated, code should import directly from h5py, e.g. 'from h5py import File'.
  import h5py.highlevel  # >= 2.8.0, https://github.com/h5py/h5py/issues/1063
[1]    92194 segmentation fault  python
(env_py2) Johns-iMac-Pro :: /Volumes/Data/Tutorials 139 » python -V
Python 2.7.16 :: Anaconda, Inc.
(env_py2) Johns-iMac-Pro :: /Volumes/Data/Tutorials » # macOS 11.6 (20G165)
(env_py2) Johns-iMac-Pro :: /Volumes/Data/Tutorials »
```

mvpa2.tutorial_suite:
```
(env_py2) Johns-iMac-Pro :: /Volumes/Data/Tutorials » python -m mvpa2.tutorial_suite
/Users/john/opt/anaconda3/envs/env_py2/lib/python2.7/site-packages/mvpa2/base/hdf5.py:40: H5pyDeprecationWarning: The h5py.highlevel module is deprecated, code should import directly from h5py, e.g. 'from h5py import File'.
  import h5py.highlevel  # >= 2.8.0, https://github.com/h5py/h5py/issues/1063
[1]    93034 segmentation fault  python -m mvpa2.tutorial_suite
```

Thanks for any advice!
--
John