Feature Update - improved settings loading for devices

[manzelmi-thorlabs]

Device adapter now has the ability to auto detect settings for connected stages. This is done using the settings XML files in the Kinesis installation. Functionality is as follows:

• TinyXML is used for settings file reading.
• For controllers that require the user to select the connected actuator/stage, a drop-down in the pre-init properties list is populated with compatible stages. The user must select the desired stage. This reads settings from XML and pushes them to the controller.
• For controllers that auto detect the connected actuator/stage, the adatper will load settings and query the actuator name. This is then used to update local variables for use in UI.
• For customers, using legacy config files, the device units per mm/rev properties are left in.