More work, cleanups, HTML output:

- Makefile.am tests/Makefile.am tests/REC1/Makefile.am
  tests/REC2/Makefile.am tests/REC2/html.xml: added tests target
  too, added the HTML output test
- libxmls/xsltutils.c: added HTML output
- libxslt/xslt.c: check version on literal result used as templates
- libxslt/transform.c: fixed an error in VERSION number
- libxslt/templates.c: make sure generated nodes have doc and
  parent properly set
Daniel