Huge cleanup, I switched to compile with

-Wall -g -O -ansi -pedantic -W -Wunused -Wimplicit
-Wreturn-type -Wswitch -Wcomment -Wtrigraphs -Wformat
-Wchar-subscripts -Wuninitialized -Wparentheses -Wshadow
-Wpointer-arith -Wcast-align -Wwrite-strings -Waggregate-return
-Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Winline
- HTMLparser.[ch] HTMLtree.c SAX.c debugXML.c encoding.[ch]
  encoding.h entities.c error.c list.[ch] nanoftp.c
  nanohttp.c parser.[ch] parserInternals.[ch] testHTML.c
  testSAX.c testURI.c testXPath.c tree.[ch] uri.c
  valid.[ch] xinclude.c xmlIO.[ch] xmllint.c xmlmemory.c
  xpath.c xpathInternals.h xpointer.[ch] example/gjobread.c:
  Cleanup, staticfied a number of non-exported functions,
  detected and cleaned up a dozen of problem found this way,
  avoided a lot of public function name/typedef/system names clashes
- doc/xml.html: updated
- configure.in: switched private flags to the really pedantic ones.
Daniel

HTMLtree.c

@@ -34,6 +34,18 @@
 #include <libxml/xmlerror.h>
 #include <libxml/parserInternals.h>
 
+/************************************************************************
+ *									*
+ * 		When running GCC in vaacum cleaner mode			*
+ *									*
+ ************************************************************************/
+
+#ifdef __GNUC__
+#define UNUSED __attribute__((__unused__))
+#else
+#define UNUSED
+#endif
+
 /************************************************************************
  *									*
  *   		Getting/Setting encoding meta tags			*
@@ -680,10 +692,13 @@ htmlDocDumpMemory(xmlDocPtr cur, xmlChar**mem, int *size) {
  * @doc:  the document
  * @encoding:  the encoding string
  * 
+ * TODO: check whether encoding is needed
+ *
  * Dump the HTML document DTD, if any.
  */
 static void
-htmlDtdDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc, const char *encoding) {
+htmlDtdDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc,
+	          const char *encoding UNUSED) {
     xmlDtdPtr cur = doc->intSubset;
 
     if (cur == NULL) {
@@ -717,7 +732,8 @@ htmlDtdDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc, const char *encoding) {
  * Dump an HTML attribute
  */
 static void
-htmlAttrDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc, xmlAttrPtr cur, const char *encoding) {
+htmlAttrDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc, xmlAttrPtr cur,
+	           const char *encoding UNUSED) {
     xmlChar *value;
 
     if (cur == NULL) {