Improve XML serialization, URI parsing, and XPath node set processing.

third_party/libxml/src/xpath.c

 /*
  * xpath.c: XML Path Language implementation
  *          XPath is a language for addressing parts of an XML document,
  *          designed to be used by both XSLT and XPointer
  *f
  * Reference: W3C Recommendation 16 November 1999
  *     http://www.w3.org/TR/1999/REC-xpath-19991116
  * Public reference:
  *     http://www.w3.org/TR/xpath
  *
@@ skipping 4350 matching lines @@
 xmlXPathNewValueTree(xmlNodePtr val) {
     xmlXPathObjectPtr ret;
 
     ret = (xmlXPathObjectPtr) xmlMalloc(sizeof(xmlXPathObject));
     if (ret == NULL) {
         xmlXPathErrMemory(NULL, "creating result value tree\n");
         return(NULL);
     }
     memset(ret, 0 , (size_t) sizeof(xmlXPathObject));
     ret->type = XPATH_XSLT_TREE;
-    ret->boolval = 1;
+    ret->boolval = 0;
     ret->user = (void *) val;
     ret->nodesetval = xmlXPathNodeSetCreate(val);
 #ifdef XP_DEBUG_OBJ_USAGE
     xmlXPathDebugObjUsageRequested(NULL, XPATH_XSLT_TREE);
 #endif
     return(ret);
 }
 
 /**
  * xmlXPathNewNodeSetList:
@@ skipping 11011 matching lines @@
                          xmlXPathTranslateFunction);
 
     xmlXPathRegisterFuncNS(ctxt, (const xmlChar *)"escape-uri",
          (const xmlChar *)"http://www.w3.org/2002/08/xquery-functions",
                          xmlXPathEscapeUriFunction);
 }
 
 #endif /* LIBXML_XPATH_ENABLED */
 #define bottom_xpath
 #include "elfgcchack.h"