Cleaner initial boot.

This does some cleanup of the initial boot, especially when
booting in "no core apps" mode for encryption/decryption.

Change-Id: Ifb3949f580e52f54559e603c4b0b104f6bac2f6c
diff --git a/services/java/com/android/server/BootReceiver.java b/services/java/com/android/server/BootReceiver.java
index 7e1de5a..235c662 100644
--- a/services/java/com/android/server/BootReceiver.java
+++ b/services/java/com/android/server/BootReceiver.java
@@ -20,11 +20,14 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.IPackageManager;
 import android.os.Build;
 import android.os.DropBoxManager;
 import android.os.FileObserver;
 import android.os.FileUtils;
 import android.os.RecoverySystem;
+import android.os.RemoteException;
+import android.os.ServiceManager;
 import android.os.SystemProperties;
 import android.provider.Downloads;
 import android.util.Slog;
@@ -69,7 +72,15 @@
                     Slog.e(TAG, "Can't log boot events", e);
                 }
                 try {
-                    removeOldUpdatePackages(context);
+                    boolean onlyCore = false;
+                    try {
+                        onlyCore = IPackageManager.Stub.asInterface(ServiceManager.getService(
+                                "package")).isOnlyCoreApps();
+                    } catch (RemoteException e) {
+                    }
+                    if (!onlyCore) {
+                        removeOldUpdatePackages(context);
+                    }
                 } catch (Exception e) {
                     Slog.e(TAG, "Can't remove old update packages", e);
                 }