Joe Orton provided a patch fixing a problem when iconv is specified to be

* configure.in: Joe Orton provided a patch fixing a problem
  when iconv is specified to be in a non-standard directory
  but wasn't exported in xml2-config --cflags
Daniel
diff --git a/configure.in b/configure.in
index e53688c..7e8a4ef 100644
--- a/configure.in
+++ b/configure.in
@@ -377,6 +377,8 @@
 else
     if test "$with_iconv" != "yes" ; then
 	CPPFLAGS="${CPPFLAGS} -I$with_iconv/include"
+	# Export this since our headers include iconv.h
+	XML_INCLUDEDIR="${XML_INCLUDEDIR} -I$with_iconv/include"
 	ICONV_LIBS="-L$with_iconv/lib"
     fi