Replace deprecated command make_directory
Replace deprecated command make_directory

It was marked as deprecated by CMake 2.6 or even earlier.

boundlessgeo/PDAL,lucadelu/PDAL,mtCarto/PDAL,lucadelu/PDAL,verma/PDAL,boundlessgeo/PDAL,DougFirErickson/PDAL,jwomeara/PDAL,radiantbluetechnologies/PDAL,jwomeara/PDAL,boundlessgeo/PDAL,Sciumo/PDAL,Sciumo/PDAL,DougFirErickson/PDAL,mtCarto/PDAL,mpgerlek/PDAL-old,verma/PDAL,radiantbluetechnologies/PDAL,jwomeara/PDAL,lucadelu/PDAL,verma/PDAL,mpgerlek/PDAL-old,boundlessgeo/PDAL,radiantbluetechnologies/PDAL,Sciumo/PDAL,verma/PDAL,verma/PDAL,verma/PDAL,Sciumo/PDAL,verma/PDAL,mpgerlek/PDAL-old,mtCarto/PDAL,lucadelu/PDAL,mpgerlek/PDAL-old,DougFirErickson/PDAL,jwomeara/PDAL,DougFirErickson/PDAL,mtCarto/PDAL,radiantbluetechnologies/PDAL