Added some necessary references to the JUnit jar.
Reviewed by gwt.team.jat


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@223 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/common.ant.xml b/common.ant.xml
index 154997d..a60b173 100755
--- a/common.ant.xml
+++ b/common.ant.xml
@@ -140,6 +140,7 @@
 					<pathelement location="${javac.junit.out}" />
 					<pathelement location="${javac.out}" />
 					<pathelement location="${gwt.dev.staging.jar}" />
+					<pathelement location="${gwt.tools.lib}/junit/junit-3.8.1.jar" />
 				</classpath>
 
 				<formatter type="plain" />