add javacSource and javacTarget in attempt to get tests compiling in build
diff --git a/jaxb/tests/org.eclipse.jpt.jaxb.core.tests/build.properties b/jaxb/tests/org.eclipse.jpt.jaxb.core.tests/build.properties
index 00afdcb..320b3f2 100644
--- a/jaxb/tests/org.eclipse.jpt.jaxb.core.tests/build.properties
+++ b/jaxb/tests/org.eclipse.jpt.jaxb.core.tests/build.properties
@@ -1,5 +1,5 @@
 ################################################################################
-# Copyright (c) 2010 Oracle. All rights reserved.
+# Copyright (c) 2011 Oracle. All rights reserved.
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License v1.0, which accompanies this distribution
 # and is available at http://www.eclipse.org/legal/epl-v10.html.
@@ -7,7 +7,8 @@
 # Contributors:
 #     Oracle - initial API and implementation
 ################################################################################
-
+javacSource = 1.5
+javacTarget = 1.5
 bin.includes = .,\
                META-INF/,\
                about.html,\