Fixes the HDAL initialization call for default Falcon in NovintScaffold.

Also modifies the Novint VisualTest to use the default Falcon, and adds
a cmake doc for the cmake variable that holds the HDAL SDK include
directory.
Rename local variable in NovintScaffold, removing description of type.
Merge branch 'fix/better-novint-default-initialization' into 'master'

Fix the default Falcon initialization code

+1: Vien Tran, gsathyaseelan, Harald Scheirich

Merged-on: https://www.assembla.com/code/OpenSurgSim/git/merge_requests/620093