COMP: check if Extension Manager supported
Created by: agirault
In vtkSlicerApplicationLogic::IsEmbeddedModule
the variable
Slicer_EXTENSIONS_DIRBASENAME
was not defined if the
Slicer_BUILD_EXTENSIONMANAGER_SUPPORT
is false.
Also corrected a warning due to unused variable slicerRevision
in vtkSlicerApplicationLogic::IsEmbeddedModule
in the case
where the Extension Manager was not build.
Co-authored-by: Jean-Christophe Fillion-Robin jchris.fillionr@kitware.com