messenger.jar:
#ifdef MOZ_XUL_APP
% content messenger-mapi %content/messenger-mapi/ xpcnativewrappers=yes
#else
*    content/messenger-mapi/contents.rdf                              (contents.rdf)
#endif
     content/messenger-mapi/pref-mailnewsOverlay.xul                  (pref-mailnewsOverlay.xul)
     content/messenger-mapi/pref-mailnewsOverlay.js                   (pref-mailnewsOverlay.js)