Couple of fixes, getting ready for 2.3.1:
- configure.in: applied patch from Daniel van Balen for OpenBSD
  and bumped version to 2.3.1
- HTMLtree.c result/HTML/doc3.htm result/HTML/wired.html: the
  attempt to find autoclosing was simply broken, removed it,
  updated the examples, this is better
Daniel
diff --git a/configure.in b/configure.in
index e7edba9..775ef80 100644
--- a/configure.in
+++ b/configure.in
@@ -6,7 +6,7 @@
 
 LIBXML_MAJOR_VERSION=2
 LIBXML_MINOR_VERSION=3
-LIBXML_MICRO_VERSION=0
+LIBXML_MICRO_VERSION=1
 LIBXML_VERSION=$LIBXML_MAJOR_VERSION.$LIBXML_MINOR_VERSION.$LIBXML_MICRO_VERSION
 LIBXML_VERSION_INFO=`expr $LIBXML_MAJOR_VERSION + $LIBXML_MINOR_VERSION`:$LIBXML_MICRO_VERSION:$LIBXML_MINOR_VERSION
 
@@ -140,7 +140,7 @@
 AC_CHECK_FUNC(isnan, , AC_CHECK_LIB(m, isnan,
   [M_LIBS="-lm"; AC_DEFINE(HAVE_ISNAN)]))
 
-AC_CHECK_FUNC(isinf, , AC_CHECK_LIB(m, isinf,
+AC_CHECK_FUNC(isinf, AC_DEFINE(HAVE_ISINF) , AC_CHECK_LIB(m, isinf,
   [M_LIBS="-lm"; AC_DEFINE(HAVE_ISINF)]))
 
 XML_LIBDIR='-L${libdir}'