Upgrade Bluetooth pairing dialogs for ICS.

* Change Bluetooth pairing dialogs to match ICS wireframes.
* Default to numeric soft keyboard for PIN entry, and add checkbox
  to allow user to switch to alphanumeric keyboard if necessary.
* Move all Bluetooth advanced settings into action bar menu.
* Toggle visibility by touching "My device" entry in devices list.

Change-Id: Ic2377eb4364f41d215181cb1e3933997c9db9106

src/com/android/settings/bluetooth/CachedBluetoothDevice.java

@@ -257,6 +257,14 @@ final class CachedBluetoothDevice implements Comparable<CachedBluetoothDevice> {
         return true;
     }
 
+    /**
+     * Return true if user initiated pairing on this device. The message text is
+     * slightly different for local vs. remote initiated pairing dialogs.
+     */
+    boolean isUserInitiatedPairing() {
+        return mConnectAfterPairing;
+    }
+
     void unpair() {
         disconnect();