CVS domivogt: * Set version to 2.5.16.

[FVWM CVS]

CVSROOT:        /home/cvs/fvwm
Module name:    fvwm
Changes by:     domivogt        06/01/14 03:58:30

Modified files:
        .              : ChangeLog NEWS configure.ac 

Log message:
* Set version to 2.5.16.