revert saxon url because https fails

git-svn-id: https://svn.apache.org/repos/asf/xmlbeans/trunk@1859669 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/build.xml b/build.xml
index 2d9a91b..2106941 100644
--- a/build.xml
+++ b/build.xml
@@ -47,7 +47,7 @@
     <property name="saxon.zip" location="${compile.lib}/saxonb9-0-0-4j.zip"/>
     <property name="saxon.jar" location="${compile.lib}/saxon9.jar"/>
     <property name="saxon-dom.jar" location="${compile.lib}/saxon9-dom.jar"/>
-    <property name="saxon.url" value="https://master.dl.sourceforge.net/project/saxon/OldFiles/9.0/9.0.0.4/saxonb9-0-0-4j.zip"/>
+    <property name="saxon.url" value="http://master.dl.sourceforge.net/project/saxon/OldFiles/9.0/9.0.0.4/saxonb9-0-0-4j.zip"/>
 
     <property name="xcresolver.zip" location="${compile.lib}/xcresolver.zip"/>
     <property name="xcresolver.jar" location="${compile.lib}/resolver.jar"/>