compile using Java 6 source compat

Author: kares

pom.xml

@@ -145,6 +145,12 @@
       <version>3.1.4.RELEASE</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>javax.activation</groupId>
+      <artifactId>activation</artifactId>
+      <version>1.1.1</version>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>rubygems</groupId>
       <artifactId>jruby-openssl</artifactId>
@@ -185,8 +191,8 @@
         <artifactId>maven-compiler-plugin</artifactId>
         <version>2.5.1</version>
         <configuration>
-          <source>1.5</source>
-          <target>1.5</target>
+          <source>1.6</source>
+          <target>1.6</target>
           <showDeprecation>true</showDeprecation>
           <showWarnings>true</showWarnings>
         </configuration>