Update license date on all files. No functional changes.
Tweak internally-generated UUID to mark it as version 4 (random-based).
Another attempt to get UUID working on all platforms (there appears to
be no consistency to speak of).
It turns out that Redhat/CentOS uses yet a third implementation of UUID.
Generalize the compile flags to make this work. Still kind of a hack.
Add UUID support to libep (for future use).