- doc/encoding.html doc/xml.html: added I18N doc

- encoding.[ch] HTMLtree.[ch] parser.c HTMLparser.c: I18N encoding
  improvements, both parser and filters, added ASCII & HTML,
  fixed the ISO-Latin-1 one
- xmllint.c testHTML.c: added/made visible --encode
- debugXML.c : cleanup
- most .c files: applied patches due to warning on Windows and
  when using Sun Pro cc compiler
- xpath.c : cleanup memleaks
- nanoftp.c : added a TESTING preprocessor flag for standalong
  compile so that people can report bugs more easilly
- nanohttp.c : ditched socklen_t which was a portability mess
  and replaced it with unsigned int.
- tree.[ch]: added xmlHasProp()
- TODO: updated
- test/ : added more test for entities, NS, encoding, HTML, wap
- configure.in: preparing for 2.2.0 release
Daniel

nanohttp.c

@@ -656,7 +656,7 @@ xmlNanoHTTPConnectAttempt(struct in_addr ia, int port)
     }
 
     if ( FD_ISSET(s, &wfd) ) {
-	socklen_t len;
+	unsigned int len; /* was socklen_t barfed on some systems :-( */
 	len = sizeof(status);
 	if (getsockopt(s, SOL_SOCKET, SO_ERROR, &status, &len) < 0 ) {
 	    /* Solaris error code */