This file exists to clarify the licensing intent of this project.

The following files are under LGPL v2.1 (no 'or later' clause) as they
are intended to be library code.

libs/routines.cpp
libs/timeRoutines.cpp
libs/prettyPrint.cpp

The rest are under GPL v2 (no 'or later' clause), especially as they
have no particular interface that is usable for other projects.
