the problems of the previous version (used floating point, overflowed, didn't
round properly). The comments at the top of the file are worth reading;
especially note 2 concerning "ls -sh".
not going to scale up as well as I would like, and Matt Kraai and I have
discussed a better long term solution. But for now this will at least make all
the human-readable apps give correct answers.
Please test the human readable/non-human readable options on your systems!!!
-Erik