CVS scott: Update FvwmTabs module to use new perllib API.

[FVWM CVS]

CVSROOT:        /home/cvs/fvwm
Module name:    fvwm
Changes by:     scott   09/03/17 22:30:39

Modified files:
        modules/FvwmTabs: FvwmTabs.in 

Log message:
Update FvwmTabs module to use new perllib API.