Log Message:
update to libxslt 1.2.4

fixes the security issue reported in:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1767
http://secunia.com/advisories/30315/
http://bugzilla.gnome.org/show_bug.cgi?id=527297

1.1.24: May 13 20088:
   - Documentation: man page fix (Vincent Lefevre).
   - Bug fixes: pattern bug fix, key initialization problems, exclusion of
      unknown namespaced element on top of stylesheets, python generator
      syntactic cleanup (Martin)