cmake/modules/FindVIGRA.cmake: Rename VIGRA_VIGRANUMPYCORE_LIBRARY_DIR to the more general VIGRANUMPY_SITEPACKAGE_DIR.
cmake/modules/FindVIGRA.cmake: Rename VIGRA_VIGRANUMPYCORE_LIBRARY_DIR to the more general VIGRANUMPY_SITEPACKAGE_DIR.

DudLab/rank_filter,nanshe-org/rank_filter,jakirkham/rank_filter,DudLab/rank_filter,nanshe-org/rank_filter,jakirkham/rank_filter,jakirkham/rank_filter,nanshe-org/rank_filter,DudLab/rank_filter