+ Added dummy function to all users of nsIWebProgressListener + Added new security event sink. + Hooked up new event sink to docloader and friends. + Fixed memory leaks and crashes in nsSecureBrowserImpl. + Added AlertPrompt to nsIPrompt Interface. + Enabling xpcom test on unix. Fixes bug 46872. r=valeski/rpotts git-svn-id: svn://10.0.0.236/trunk@79206 18797224-902f-48f8-a5cc-f745e15eee43