make sensorfw plugin handle the sensord restarting.

 This way, clients that are connected will continue to receive updates
 after the sensord has restarted, without the need to restart the
 sensor.

Task-number: QTBUG-34050
Change-Id: I4a8fbca189764cf23a1453feae5c1fd9ed6911e7
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
static linking: add classname to qmldir

The new qmlimportscanner for static linking depends on the
qmldir reporting the classname of the plugins. So add that
to sensors as well.

Change-Id: I80fd0a1d705ef589268231e6399f612a74b70828
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
BlackBerry: Disabled "returnGeoValues" feature

Elimination of interference is not supported on BlackBerry, so
returnGeoValues property will be ignored.

Change-Id: I5c6e3a80ec18f9e0d349d3c4040bfb8067a72291
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>
Merge remote-tracking branch 'upstream/stable' into wip/tizen

Change-Id: I4603e34fa26e62ab53c6f0d26b2a84fe5f240748