fixed problem pointed out by Stéphane Bidoul on the list. completed

* python/generator.py, python/libxml2class.txt: fixed problem
  pointed out by Stéphane Bidoul on the list.
* xinclude.c, xpointer.c, xpath.c, include/libxml/xpointer.h:
  completed modifications required to fix Bug 129967 (at last!).
  Now wait to see how long before further trouble...
7 files changed