[RFA] Fix a bunch of python leaks due to missing calls to tp_free in *_dealloc functions.

[Tom Tromey]

>>>>> "Philippe" == Philippe Waroquiers <philippe.waroquiers@skynet.be> writes:

Philippe> Most of the leaks in python tests are due to the fact that many
Philippe> PyObject xxxxx_dealloc functions are missing the line to free self
Philippe> or obj such as:
Philippe>    Py_TYPE (self)->tp_free (self);
Philippe> or
Philippe>    Py_TYPE (obj)->tp_free (obj);

Philippe> With this patch, the number of python tests leaking decreases from 52 to 12.

Thank you.  This is ok.

Tom