Tell jitify_preprocess where to search for libnvrtc

On machines with multiple CUDA Toolkits installed it is possible
to have a mismatch between the version of `nvcc` used to compile
code and the version of `libnvrtc` used for the JIT code. This
generally occurs when `LD_LIBRARY_PATH` points to a different
version of the CUDA Toolkit.

We now explicitly specify what toolkit library directory to search
when JIT code during libcudf compilation.

cpp/cmake/Modules/JitifyPreprocessKernels.cmake

@@ -39,7 +39,7 @@ function(jit_preprocess_files)
       VERBATIM
       COMMAND ${CMAKE_COMMAND} -E make_directory "${jit_output_directory}"
       COMMAND
-        jitify_preprocess ${ARG_FILE} -o
+        "${CMAKE_COMMAND}" -E env LD_LIBRARY_PATH="${CUDAToolkit_LIBRARY_DIR}" $<TARGET_FILE:jitify_preprocess> ${ARG_FILE} -o
         ${CUDF_GENERATED_INCLUDE_DIR}/include/jit_preprocessed_files -i -m -std=c++17
         -remove-unused-globals -D_FILE_OFFSET_BITS=64 -D__CUDACC_RTC__ -I${CUDF_SOURCE_DIR}/include
         -I${CUDF_SOURCE_DIR}/src ${libcudacxx_includes} -I${CUDAToolkit_INCLUDE_DIRS}