Lots of changes and bugfixes: - Enable multiple username support by listening to change events for the username field when there is more than one stored login for the form. - Make the signon hashtable store a SignonHashEntry, which has a pointer to the first SignonDataEntry. This lets us adjust the head of the linked list without a hashtable operation, and also fixes a case where we would continue using a deleted entry, leading to a crash.- Change FindPasswordEntryFromSignonData to FnidPasswordEntryInternal, and refactor it a bit.- Clean up prefill logic so that multiple forms on a page could be prefilled.- Fix bug where the last input was used as the username field, instead of the input just before the password.- Make sure we write out all entries for each realm.- Make sure we include all entries in each realm when returning an enumerator.- Remove some form manager cruft I missed in passwordManager.js.

toolkit/components/passwordmgr/content/passwordManager.js

@@ -69,10 +69,8 @@ function Startup() {
 }
 
 function Shutdown() {
-  if (isPasswordManager) {
-    kObserverService.removeObserver(signonReloadDisplay, "signonChanged");
-    kObserverService.removeObserver(signonReloadDisplay, "signonSelectUser");
-  }
+  kObserverService.removeObserver(signonReloadDisplay, "signonChanged");
+  kObserverService.removeObserver(signonReloadDisplay, "signonSelectUser");
 }
 
 var signonReloadDisplay = {
@@ -355,11 +353,7 @@ function TrimString(string)
 }
 
 function doHelpButton() {
-  if (isPasswordManager) {
-     openHelp("password_mgr");
-  } else {
-     openHelp("forms_sites");
-  }
+  openHelp("password_mgr");
 }