Fix issue #27653326: Sync doesn't work in doze maintenance

Add a (configurable) delay between when we start a maintenance
window until the minimum time we will end it.

Also switch to using the alarm manager callback API.  (Yay!)

Also fix a little printing problem in the alarm manager dump
so we put the package name and not some class hash in the
summary string of an alarm entry.

Change-Id: I4281e5c80bc8b26ebc1fb6f603ec33ec0e379daa
diff --git a/services/core/java/com/android/server/job/JobSchedulerService.java b/services/core/java/com/android/server/job/JobSchedulerService.java
index 9fd7f90..e34fb9b 100644
--- a/services/core/java/com/android/server/job/JobSchedulerService.java
+++ b/services/core/java/com/android/server/job/JobSchedulerService.java
@@ -209,7 +209,9 @@
     private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
-            Slog.d(TAG, "Receieved: " + intent.getAction());
+            if (DEBUG) {
+                Slog.d(TAG, "Receieved: " + intent.getAction());
+            }
             if (Intent.ACTION_PACKAGE_REMOVED.equals(intent.getAction())) {
                 // If this is an outright uninstall rather than the first half of an
                 // app update sequence, cancel the jobs associated with the app.