[xslt] Release of libxslt-1.0.21

[Daniel Veillard <veillard redhat com>]

  The new release is availble at the usual spots:
     ftp://xmlsoft.org/ and Gnome FTP mirrors
     http://xmlsoft.org/XSLT/

 Mostly a bugfix release:

* Bug fixes: match="node()", date:difference() (Igor and Charlie Bozeman),
  disable-output-escaping
* Python bindings: style.saveResultToString() from Ralf Mattes
* Logos from Marc Liyanage
* Mem leak fix from Nathan Myers
* Makefile: DESTDIR fix from Christophe Merlet, AMD x86_64 (Mandrake),
  Windows (Igor), Python detection
* Documentation improvements: John Fleck

Daniel

-- 
Daniel Veillard      | Red Hat Network https://rhn.redhat.com/
veillard@redhat.com  | libxml GNOME XML XSLT toolkit  http://xmlsoft.org/
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