Added average_runs.py and make_graphs.sh to speed up workload.
It works by making a symbolic link to make_graphs.sh in the working directory (i.e. to /mini/bare/random/make_graphs.sh), and
setting up export.gp in that directory so that it directly outputs .png files instead of outputting to terminal. Example export.gps
are in /mini/bare/random and /mini/virt/random now.