Revert "remove powermockito tests for Java5 compatibility"

This reverts commit 142a788ad8102cd30b04746d4dc1b0bd56927059.
diff --git a/pom.xml b/pom.xml
index 38f4be5..a2df99b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -45,6 +45,7 @@
     <!-- configuration bits for cutting a release candidate -->
     <commons.release.version>${project.version}</commons.release.version>
     <commons.rc.version>RC1</commons.rc.version>
+    <powermock.version>1.6.4</powermock.version>
   </properties>
 
   <issueManagement>
@@ -65,6 +66,18 @@
       <version>1.5</version>
       <optional>true</optional>
     </dependency>
+    <dependency>
+      <groupId>org.powermock</groupId>
+      <artifactId>powermock-module-junit4</artifactId>
+      <version>${powermock.version}</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.powermock</groupId>
+      <artifactId>powermock-api-mockito</artifactId>
+      <version>${powermock.version}</version>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <developers>