Opening the interface xmlNewCharEncodingHandler as requested in #89415

* encoding.c include/libxml/encoding.h: Opening the interface
  xmlNewCharEncodingHandler as requested in #89415
* python/generator.py python/setup.py.in: applied cleanup
  patches from Marc-Andre Lemburg
* tree.c: fixing bug #89332 on a specific case of loosing
  the XML-1.0 namespace on xml:xxx attributes
Daniel
6 files changed