update ndpf-gv-mkplots for new alltime range; update cores.awk to prevent problem with ndpf-gv-dbupdate -- that program tried to read number of slots while cores.awk was busy writing it, found an empty file.
nl.nikhef.ndpf.groupviews/trunk/cores.awk
nl.nikhef.ndpf.groupviews/trunk/ndpf-gv-mkplots