cmake VTK_HAS_PARALLEL examples

feelpp/feelpp feelpp/feel/CMakeLists.txt :257

target_compile_definitions( feelpp PUBLIC VTK_HAS_PARALLEL=${VTK_HAS_PARALLEL} )

feelpp/feelpp feelpp/feel/CMakeLists.txt :265

target_compile_definitions( feelpp PUBLIC VTK_HAS_PARALLEL=${VTK_HAS_PARALLEL} )