/**
  * Write skeleton installer to primary jar. It is just an included jar, except that we copy the
  * META-INF as well.
  */
 protected void writeSkeletonInstaller() throws IOException {
   sendMsg("Copying the skeleton installer", PackagerListener.MSG_VERBOSE);
   mergeManager.addResourceToMerge("com/izforge/izpack/installer/");
   mergeManager.addResourceToMerge("org/picocontainer/");
   mergeManager.addResourceToMerge("img/");
   mergeManager.addResourceToMerge("bin/");
   mergeManager.addResourceToMerge("com/izforge/izpack/api/");
   mergeManager.addResourceToMerge("com/izforge/izpack/event/");
   mergeManager.addResourceToMerge("com/izforge/izpack/core/");
   mergeManager.addResourceToMerge("com/izforge/izpack/data/");
   mergeManager.addResourceToMerge("com/izforge/izpack/gui/");
   mergeManager.addResourceToMerge("com/izforge/izpack/merge/");
   mergeManager.addResourceToMerge("com/izforge/izpack/util/");
   mergeManager.addResourceToMerge("org/apache/regexp/");
   mergeManager.addResourceToMerge("com/coi/tools/");
   mergeManager.addResourceToMerge("org/apache/tools/zip/");
   mergeManager.merge(primaryJarStream);
 }