Compiling Notes
---------------
This is the command generally used to compile gradu:
$ gcc -Wall -D_GNU_SOURCE -lplot -o gradu gradu.c

Need to make sure that the libplot libraries are in a directory that
can be found in a directory listed in /etc/ld.so.conf.
After making any update to this file, you must sync the ld.so.cache
with this command:
# /sbin/ldconfig

To get the libplot library that gradu needs, look here:
Linkname: plotutils - GNU Project - Free Software Foundation (FSF)
     URL: http://www.gnu.org/software/plotutils/plotutils.html
