renamed tests.failed to check.tests.failed to avoid "tests.failed" during build

when actually the tests have been succesful

adapted have.xalan so that it works with the xalan version
included in jdk 1.4 (no Version class there)

build.xml

@@ -184,8 +184,16 @@
 
   <!-- Targets to verify that Xalan is in the classpath -->
   <target name="check.xalan">
-    <available property="have.xalan"
-               classname="org.apache.xalan.Version"/>
+    <condition property="have.xalan">
+      <or>
+        <!-- jdk 1.3 with modern Xalan -->
+        <available classname="org.apache.xalan.Version"/>
+        <!-- Xalan classes in jdk 1.4 (beta 3) are OK for running
+             the tests, but there is no Version class in jdk 1.4:
+             fallback to stable jaxp implementation class          -->
+        <available classname="org.apache.xalan.transformer.TransformerImpl"/>
+      </or>
+    </condition>
   </target>
   <target name="require.xalan" depends="check.xalan" unless="have.xalan">
     <fail message="Need to have Xalan in your CLASSPATH to run the tests. You can download it from http://xml.apache.org/."/>
@@ -221,11 +229,11 @@
     </junitreport>
 
     <!-- if only fail had an if attribute ... ugly workaround follows -->
-    <antcall target="tests.failed"/>
+    <antcall target="check.tests.failed"/>
 
   </target>
 
-  <target name="tests.failed" if="tests.have.failed">
+  <target name="check.tests.failed" if="tests.have.failed">
     <property name="report" value="${basedir}/${testreport.dir}/index.html"/>
     <fail message="Unit tests failed - Report is available in ${report}"/>
   </target>