Changelog at https://www.nikhef.nl/~h24/qcdnum/QcdnumDownload.html says:
Same as qcdnum-17-01/15 with a few minor fixes.
One of these fixes is to replace real*16 with double precision for a few
variables to be standards compliant. This resolves following error:
Error: Old-style type declaration REAL*16 not supported at (1)