Release of BlueZ 5.2

This release fixes some issues with LE pairing and re-connections and also enables the possibility of connecting LE through the Device1.Connect D-Bus method. There is also a fix to the Profile interface where bluetoothd now waits for reverse SDP to complete before accepting a connection and calling the NewConnection D-Bus method (important so that the right profile version and features can be included in the method call). Besides the bug fixes there’s also more AVRCP 1.5 support  related to volume control and browsing.