small cleanup of the man page fixed a potential problem raised by Petr

* libxml.3: small cleanup of the man page
* HTMLtree.c: fixed a potential problem raised by Petr Vandrovec
  when serializing HREF attributes generated by XSLT.
Daniel
diff --git a/HTMLtree.c b/HTMLtree.c
index 4e21edd..82e1dc1 100644
--- a/HTMLtree.c
+++ b/HTMLtree.c
@@ -386,8 +386,8 @@
 	value = xmlNodeListGetString(doc, cur->children, 0);
 	if (value) {
 	    xmlBufferWriteChar(buf, "=");
-	    if ((xmlStrEqual(cur->name, BAD_CAST "href")) ||
-		(xmlStrEqual(cur->name, BAD_CAST "src"))) {
+	    if ((!xmlStrcasecmp(cur->name, BAD_CAST "href")) ||
+		(!xmlStrcasecmp(cur->name, BAD_CAST "src"))) {
 		xmlChar *escaped;
 		xmlChar *tmp = value;
 
@@ -875,8 +875,8 @@
 	value = xmlNodeListGetString(doc, cur->children, 0);
 	if (value) {
 	    xmlOutputBufferWriteString(buf, "=");
-	    if ((xmlStrEqual(cur->name, BAD_CAST "href")) ||
-		(xmlStrEqual(cur->name, BAD_CAST "src"))) {
+	    if ((!xmlStrcasecmp(cur->name, BAD_CAST "href")) ||
+		(!xmlStrcasecmp(cur->name, BAD_CAST "src"))) {
 		xmlChar *escaped;
 		xmlChar *tmp = value;