Additional functionality for MOT and pin handling.

Additional functionality for MOT and pin handling.
 - Add APIs to do MOT discovery of a specific device.
 - Add APIs to check to see if the caller is a subowner.
 - Add context to display and input pin callbacks.
 - Add device information to input pin callback.
 - Enable C++ security APIs to be built for Windows.
 - Update ProvisioningClient and Sampleserver_RandomPin
   to  use the new APIs.
 - Enable MOT to always build on Windows.

Change-Id: I27af9d3c2c7065b8643f77be3ac4c9b2dc5ffe80
Signed-off-by: Alex Kelley <alexke@microsoft.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/16403
Tested-by: jenkins-iotivity <jenkins@iotivity.org>
Reviewed-by: Mike Fenelon <mike.fenelon@microsoft.com>
Reviewed-by: Kevin Kane <kkane@microsoft.com>