patch applied (packages/HaXml): Be more careful what is re-exported from XmlContent module.

[Malcolm Wallace]

Wed Mar  1 05:37:19 PST 2006  Malcolm.Wallace at cs.york.ac.uk
  * Be more careful what is re-exported from XmlContent module.
  Especially for DtdToHaskell-generated code, we do not want clashes with
  the internals of HaXml's representation types.  This commit reduces the
  number of visible types that could clash, but there still remain a few,
  which probably ought to be renamed in DtdToHaskell itself.

    M ./src/Text/XML/HaXml/XmlContent.hs -2 +9