AI 143788: am: CL 143740 Don't clear supported profiles in settings app if getRemoteClass returns error.

Also clean up the error codes returned by the framework, so that the settings app can properly detect an error.
  Original author: npelly
  Merged from: //branches/cupcake/...

Automated import of CL 143788

core/java/android/bluetooth/BluetoothDevice.java

@@ -485,7 +485,8 @@ public class BluetoothDevice {
      * Get the major, minor and servics classes of a remote device.
      * These classes are encoded as a 32-bit integer. See BluetoothClass.
      * @param address remote device
-     * @return 32-bit class suitable for use with BluetoothClass.
+     * @return 32-bit class suitable for use with BluetoothClass, or
+     *         BluetoothClass.ERROR on error
      */
     public int getRemoteClass(String address) {
         try {