Log Message:
py-gobject: Set Python incompatibility from 3.8

pkgsrc changes:
---------------
  * Add PYTHON_VERSIONS_ACCEPTED until 37 since the tp_print field of
    PyTypeObject is no longer named like that from Python 3.8
    \ 
(https://docs.python.org/3/c-api/typeobj.html#c.PyTypeObject.tp_vectorcall_offset)