apply patch from Fred Crozat to avoid outputting -L/usr/lib from

* xml2-config.in: apply patch from Fred Crozat to avoid
  outputting -L/usr/lib from xml2-config, fixes #497012
Daniel

svn path=/trunk/; revision=3672
diff --git a/xml2-config.in b/xml2-config.in
index 30e1343..2989325 100644
--- a/xml2-config.in
+++ b/xml2-config.in
@@ -84,7 +84,7 @@
     --libs)
         if [ "`uname`" = "Linux" ]
 	then
-	    if [ "@XML_LIBDIR@" = "-L/usr/lib64" ]
+	    if [ "@XML_LIBDIR@" = "-L/usr/lib" -o "@XML_LIBDIR@" = "-L/usr/lib64" ]
 	    then
 		echo @XML_LIBS@ 
 	    else