This reverts commit 8fc08b88.

    Throwing an exception in the C/Python API makes the python interpreter
    terminate. The correct way is to catch C++ exception and to raise python
    errors with the same message.

Remove the command MAKE_DIRECTORY that has been moved in python.cmake

- correct the mkdir command to make it cross-platforms
- remove the '/' in the module name (forbidden in win32 systems)

This reverts commit 037d7b9cbba692c3a666030faf8283c89704a277.

Because of _dgesvd_, the module wrap needs to link with lapack

    This reverts commit b055ba73.
    This commits seems to have side effects. Revert it temporarily.

    Use PyObject_IsTrue to test a boolean in C/Python API,
    call print as a function.

    Python packages are now installed in site-packages instead of dist-packages.

Minor changes in matlab display. Add a functor member to explicit the callable of optionalparentethis.

    global variables g_pool and g_factory have been replaced by
    PoolStorage::getInstance and FactoryStorage::getInstance static methods.

    When help was invoked with a wrong command name, the interpreter failed with
    segmentation fault.

  This avoids to miss exceptions and to terminate the python interpreter.