[xml] Release of libxml2-2.6.7

[Daniel Veillard <veillard redhat com>]

  This is mostly a flush of the current CVS state to meet GNOME release
deadlines:
      ftp://xmlsoft.org/  and GNOME FTP mirrors
      http://xmlsoft.org/

 This contains mostly small bugfixes and performances improvements:
- documentation: tutorial updates (John Fleck), benchmark results
- xmlWriter: updates and fixes (Alfred Mickautsch, Lucas Brasilino)
- XPath optimization (Petr Pajas)
- DTD ID handling optimization
- bugfixes: xpath number with > 19 fractional (William Brack),
  push mode with unescaped '>' characters, fix xmllint --stream --timing,
  fix xmllint --memory --stream memory usage, xmlAttrSerializeTxtContent
  handling NULL, trying to fix Relax-NG/Perl interface.
- python: 2.3 compatibility, whitespace fixes (Malcolm Tredinnick)
- Added relaxng option to xmllint --shell

  Thanks to everyone who reported bugs or provided fixes,

Daniel

-- 
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veillard redhat com  | libxml GNOME XML XSLT toolkit  http://xmlsoft.org/
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