missing bits from Bug 1162569 - default engine files should be in the omni.ja file, r=markh,glandium.

browser/app/profile/palemoon.js

@@ -348,6 +348,10 @@ pref("browser.download.panel.firstSessionCompleted", false);
 // search engines URL
 pref("browser.search.searchEnginesURL",      "https://addons.mozilla.org/%LOCALE%/firefox/search-engines/");
 
+// Tell the search service to load search plugins from the locale JAR
+pref("browser.search.loadFromJars", true);
+pref("browser.search.jarURIs", "chrome://browser/locale/searchplugins/");
+
 // pointer to the default engine name
 pref("browser.search.defaultenginename",      "chrome://browser-region/locale/region.properties");