libxml now grok Docbook-3.1.5 and Docbook-4.1.1 DTDs, this

popped out a couple of bugs and 3 speed issues, there is only
on minor speed issue left. Assorted collection of user reported
bugs and fixes:
- doc/encoding.html: added encoding aliases doc
- doc/xml.html: updates
- encoding.[ch]: added EncodingAliases functions
- entities.[ch] valid.[ch] debugXML.c: removed two serious
  bottleneck affecting large DTDs like Docbook
- parser.[ch] xmllint.c: added a pedantic option, will be useful
- SAX.c: redefinition of entities is reported in pedantic mode
- testHTML.c: uninitialized warning from gcc
- uri.c: fixed a couple of bugs
- TODO: added issue raised by Michael
Daniel

include/libxml/parser.h

@@ -182,6 +182,7 @@ struct _xmlParserCtxt {
 				         actually an xmlCharEncoding */
     int                nodelen;       /* Those two fields are there to */
     int                nodemem;       /* Speed up large node parsing */
+    int                pedantic;      /* signal pedantic warnings */
 };
 
 /**
@@ -354,6 +355,7 @@ xmlDocPtr	xmlParseFile		(const char *filename);
 int		xmlSubstituteEntitiesDefault(int val);
 int		xmlKeepBlanksDefault	(int val);
 void		xmlStopParser		(xmlParserCtxtPtr ctxt);
+int		xmlPedanticParserDefault(int val);
 
 /**
  * Recovery mode