itk: only pass the build dir to itkvtkglue
Other projects should use the install. Due to the way
superbuild_add_extra_cmake_args
works, it overrides local
configurations, so each project needs to set this up manually.
Other projects should use the install. Due to the way
superbuild_add_extra_cmake_args
works, it overrides local
configurations, so each project needs to set this up manually.