Revision 130944

- version requires on nss and nspr (like in xulrunner)
- fix default bookmarks.html
- use gio instead of gnomevfs
- enable startup notification
- own firefox extensions directories
- use upstream default for user_pref:
   + browser.ctrlTab.previews
   + browser.tabs.insertRelatedAfterCurrent
   + security.ssl.require_safe_negotiation
- add user_pref(browser.showQuitWarning, true)
 SILENT cf svn rev. 75285