Remove const modifier from QBluetoothLocalDevice signals.

Those signals were added in 5.3 and therefore it is still possible to
change them. At the same time fix the documentation for the signals
and its related function

Change-Id: Ide0f7b07cf624f9692f830a2534b224212da223a
Reviewed-by: Fabian Bumberger <fbumberger@rim.com>
Suppress warning from QObject attempting to connect null object

This can happen when QBluetoothLocalDevice(some_invalid_bt_address)
was called.

Change-Id: I8d547dc802b79ffd5cf8349fec6334177e8c4421
Reviewed-by: Fabian Bumberger <fbumberger@rim.com>
Fix MSVC-warnings about truncation of constant value in tst_qnearfieldtagtype2.cpp.

Change-Id: I07b915ed029fc1389b57a024dad31dd287c75240
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>
Adding a qml OPP example for sending pictures

[ChangeLog][QtBluetooth][General] Added a new
Object-Push example.

Change-Id: I78988771259dd9c7b65080bb7fb9828f6f55ece4
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>
Add documentation for picture transfer example and minor QML fixes

Change-Id: I8ef9e19de9f48797034fd186dff4b0e096748b1d
Reviewed-by: Fabian Bumberger <fbumberger@rim.com>
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>
Adjust qml scanner example to high dpi display

[ChangeLog][QtBluetooth][General] QML scanner example
has been optimized for high DPI displays. This ensures a better
user interface for Android and Blackberry devices.

Change-Id: If757cd9faddc155cbb4bb034885662abc84fc7a6
Reviewed-by: Aaron McCarthy <mccarthy.aaron@gmail.com>
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>