remove commons codec dependencies introduced by birt

https://community.jboss.org/message/647034

Problem:
18:24:27,443 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/gwt-console-server].[Resteasy]] (http-localhost-127.0.0.1-8080-6) Servlet.service() for servlet Resteasy threw exception: org.jboss.resteasy.spi.UnhandledException: java.lang.RuntimeException: Could not initialize stateful knowledge session: org.apache.commons.codec.binary.Base64.encodeBase64String([B)Ljava/lang/String;

Solution:
<!-- Install reporting AS7 -->
<target name="install.reporting.into.jboss7" depends="check.birt.as7" if="birt.download" >
<mkdir dir="${install.home}/birt"/>
<unzip src="${install.home}/lib/birt-runtime-${birt.version.as7}.zip"
dest="${install.home}/birt"/>
<copy todir="${install.home}/target/jbpm-gwt-console-server-war/WEB-INF/lib">
<fileset dir="${install.home}/birt/birt-runtime-${birt.version.as7}/ReportEngine/lib">
<include name="*/.jar"/>
<exclude name="**/org.apache.commons.codec_1.3.0.v201101211617.jar"/>
</fileset>
</copy>