XInclude and other stuff while travelling. Contributed patches:
- tree.[ch] xinclude.[ch] xmllint.c configure.in valid.c
  debugXML.c xmlversion.h.in: Started adding XInclude support,
  this is a new xmllint option
- tree.c xpath.c: applied TOM patches for XPath
- xpointer.c: fixed a couple of errors.
- uri.c: added an escaping function needed for xinclude
- testXPath.c hash.c HTMLtree.c: minor cleanups raised by
  new warning from RH70 gcc's version
Daniel
diff --git a/Makefile.am b/Makefile.am
index e8cd50e..56aa3ff 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -34,6 +34,7 @@
 		debugXML.c \
 		xpath.c \
 		xpointer.c \
+		xinclude.c \
 		nanohttp.c \
 		nanoftp.c