CVS griph: * redraw sidepics only if parts of them are exposed

[FVWM CVS]

CVSROOT:        /home/cvs/fvwm
Module name:    fvwm
Changes by:     griph   07/01/26 17:38:00

Modified files:
        .              : ChangeLog 
        fvwm           : menus.c 

Log message:
* redraw sidepics only if parts of them are exposed