Log Message:
Update to 1.0.30, from Juan RP in PR 21624.
1.0.30: May 4 2003:
   - Fixes and new APIs to handle Result Value Trees and avoid leaks
   - Fixes for: EXSLT math pow() function (Charles Bozeman), global
    parameter and global variables mismatch, a segfault on pattern
    compilation errors, namespace copy in xsl:copy-of, python generator
    problem, OpenVMS trio update, premature call to xsltFreeStackElem (Igor),
    current node when templates applies to attributes