Fix TCL inclusion on Ubuntu for VTK 5.8.0
Fix TCL inclusion on Ubuntu for VTK 5.8.0

NicolasSchnitzler/medInria-public,aabadie/medInria-public,NicolasSchnitzler/medInria-public,aabadie/medInria-public,aabadie/medInria-public,rdebroiz/medInria-public,rdebroiz/medInria-public,NicolasSchnitzler/medInria-public,rdebroiz/medInria-public