Revert "Remove unused hexdump library"

This reverts commit 6ebeb9189f.

.classpath

@@ -27,6 +27,7 @@
 	<classpathentry kind="lib" path="lib/installer-exclude/gdata-contacts-meta-3.0.jar"/>
 	<classpathentry kind="lib" path="lib/installer-exclude/gdata-core-1.0.jar"/>
 	<classpathentry kind="lib" path="lib/installer-exclude/guava-15.0.jar"/>
+	<classpathentry kind="lib" path="lib/installer-exclude/hexdump-0.2.jar"/>
 	<classpathentry kind="lib" path="lib/installer-exclude/httpclient-osgi-4.2.3.jar"/>
 	<classpathentry kind="lib" path="lib/installer-exclude/httpcore-osgi-4.2.3.jar"/>
 	<classpathentry kind="lib" path="lib/installer-exclude/ice4j-1.0.jar" sourcepath="/ice4j/src/main/java"/>

build.xml

@@ -2617,6 +2617,7 @@ org.bouncycastle.util"/>
                     prefix="net/java/sip/communicator/service/sysactivity" />
             <zipfileset src="${lib.noinst}/libdbus-java-2.7.jar" prefix="" />
             <zipfileset src="${lib.noinst}/unix-0.5.jar" prefix="" />
+            <zipfileset src="${lib.noinst}/hexdump-0.2.jar" prefix="" />
         </jar>
     </target>