Ensuring that fast-alt tab works from Home as well as other apps.

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<!-- Recents Activity -->

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        ActivityManager.RunningTaskInfo runningTask = ssp.getTopMostTask();

        // Return early if there is no running task

        if (runningTask == null) return;

        // Return early if the running task is in the home stack (optimization)

        if (SystemServicesProxy.isHomeStack(runningTask.stackId)) return;

        // Find the task in the recents list

        boolean isTopTaskHome = SystemServicesProxy.isHomeStack(runningTask.stackId);

        ArrayList<Task> tasks = focusedStack.getTasks();

        Task toTask = null;

        ActivityOptions launchOpts = null;

        int taskCount = tasks.size();

        for (int i = taskCount - 1; i >= 1; i--) {

            Task task = tasks.get(i);

            if (task.key.id == runningTask.id) {

            if (isTopTaskHome) {

                toTask = tasks.get(i - 1);

                launchOpts = ActivityOptions.makeCustomAnimation(mContext,

                        R.anim.recents_launch_next_affiliated_task_target,

                        R.anim.recents_fast_toggle_app_home_exit);

                break;

            } else if (task.key.id == runningTask.id) {

                toTask = tasks.get(i - 1);

                launchOpts = ActivityOptions.makeCustomAnimation(mContext,

                        R.anim.recents_launch_prev_affiliated_task_target,

                SystemServicesProxy ssp = Recents.getSystemServices();

                String homeActivityPackage = ssp.getHomeActivityPackageName();

                String searchWidgetPackage = Prefs.getString(mContext,

                        Prefs.Key.SEARCH_APP_WIDGET_PACKAGE, null);

                        Prefs.Key.OVERVIEW_SEARCH_APP_WIDGET_PACKAGE, null);

                // Determine whether we are coming from a search owned home activity

                boolean fromSearchHome = (homeActivityPackage != null) &&