As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent modules,
and to copy and distribute the resulting executable under terms of your choice,
provided that you also meet, for each linked independent module, the terms
and conditions of the license of that module. An independent module is a module
which is not derived from or based on this library. If you modify this
library, you may extend this exception to your version of the library, but you are
not obligated to do so. If you do not wish to do so, delete this exception
statement from your version.