added support for large file, tested with a 3+GB instance, and some

* libxml.h include/libxml/parser.h parser.c xmlIO.c DOCBparser.c:
  added support for large file, tested with a 3+GB instance,
  and some cleanup.
* catalog.c: added a TODO
* Makefile.am: added some "make tests" comments
Daniel
8 files changed