Lotsa improvement and fixes:

Lotsa improvement and fixes:
- libxslt/xsltInternals.h libxslt/pattern.c: fixed problems
  with non-named rules (*, ...) added accelerators
- libxslt/templates.[ch]: added xsltEvalTemplateString()
  and xsltEvalAttrValueTemplate() high level functions
- libxslt/transform.c: fixed the part where attributes
  had to be looked at as templates, added comment and
  PI generation
- TODO FEATURES: updated to reflect the new state
Daniel