Document Bluetooth files with overall file Doxygen comments. Add more initial RFCOMM layer code to receive and respond to SABM packets.

Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c

@@ -28,6 +28,15 @@
   this software.
 */
 
+/** \file
+ *
+ *  Bluetooth HCI layer management code. This module manages the overall
+ *  Bluetooth stack connection state to and from other devices, processes
+ *  received events from the Bluetooth controller, and issues commands to
+ *  modify the controller's configuration, such as the broadcast name of the
+ *  device.
+ */
+
 /*
 	TODO: Add local to remote device connections
  */