Realised a better way to handle the build process of both the

Browser Bundle i2p launcher, as well as the upcoming Mac OS X
i2p launcher. They share some few properties and how code has
to be managed for both system's update managers and so on.
More details will be documentated in README.md files as well as
in those commit messages I now write :)

build.xml

@@ -297,6 +297,28 @@
         </script>
     </target>
 
+    <target name="bbLauncher" depends="build">
+        <sequential>
+            <exec executable="sbt" dir="launcher" failonerror="true">
+                <arg value="browserbundle:clean" />
+            </exec>
+            <exec executable="sbt" dir="launcher" failonerror="true">
+                <arg value="browserbundle:assembly" />
+            </exec>
+        </sequential>
+    </target>
+
+    <target name="osxLauncher" depends="build">
+        <sequential>
+            <exec executable="sbt" dir="launcher" failonerror="true">
+                <arg value="macosx:clean" />
+            </exec>
+            <exec executable="sbt" dir="launcher" failonerror="true">
+                <arg value="macosx:assembly" />
+            </exec>
+        </sequential>
+    </target>
+
     <target name="buildBOB" depends="buildStreaming" >
         <ant dir="apps/BOB/" target="jar" />
         <copy file="apps/BOB/dist/BOB.jar" todir="build/" />