preparing release 2.4.27 updated and rebuilt the docs try to make sure the

* configure.in: preparing release 2.4.27
* doc/* : updated and rebuilt the docs
* doc/Makefile.am libxml.spec.in: try to make sure the tutorial
  and all the docs are actually packaged and in the final RPMs
* parser.c parserInternals.c include/libxml/parser.h: restore
  xmllint --recover feature.
Daniel
42 files changed