- changed the way Windows socket stuff get included
- removed an indetermination xmLDecl/PI(xml...)
- xmlNewNs wasn't checking for double definition
- fixed a problem with dist-hook duplicates
- fixed the loading of external entities APIs, now xmlLoadExternalEntity()
  is used everywhere
- now the xhtml spec validates with the xhtml DTD.
- error.c: fixed crashes in case of no input stream
- added the xhtml spec and dtds to the validation tests and results
Daniel