Introduce maemo6 plugin for following the radio state signal

Adds a plugin for listening to the MCE (Mode Control Entity)
radio state signal. Implemented in a new source file,
configuration flag for enabling it added to the build files.

The plugin registers an adapter driver containing a DBus signal
watch for receiving MCE_RADIO_STATES_SIG messages. On receiving
the signal, it sets the powered state of the adapter according
to the Bluetooth field.
3 files changed