Change calendar authority to com.android.calendar.

bug 2388178
diff --git a/core/java/android/provider/Calendar.java b/core/java/android/provider/Calendar.java
index 81a2191..cbd8a26 100644
--- a/core/java/android/provider/Calendar.java
+++ b/core/java/android/provider/Calendar.java
@@ -62,7 +62,7 @@
     public static final String EVENT_BEGIN_TIME = "beginTime";
     public static final String EVENT_END_TIME = "endTime";
 
-    public static final String AUTHORITY = "calendar";
+    public static final String AUTHORITY = "com.android.calendar";
 
     /**
      * The content:// style URL for the top-level calendar authority