move testng code to test/unit. patch by johano; reviewed by jbellis for #104

git-svn-id: https://svn.apache.org/repos/asf/incubator/cassandra/trunk@768584 13f79535-47bb-0310-9956-ffa450edef68

build.xml

@@ -13,6 +13,7 @@
     <property name="test.dir" value="${basedir}/test"/>
     <property name="test.classes" value="${build.dir}/test/classes"/>
     <property name="test.conf" value="${test.dir}/conf"/>
+    <property name="test.unit.src" value="${test.dir}/unit"/>
     <property name="final.name" value="cassandra"/>
 
     <!-- http://cobertura.sourceforge.net/ -->
@@ -136,7 +137,7 @@
      destdir="${test.classes}"
     >
       <classpath refid="cassandra.classpath"/>
-      <src path="${test.dir}"/>
+      <src path="${test.unit.src}"/>
     </javac>
   </target>