* gtk/gtkclist.c: avoid void pointer math

* gtk/gtkhscale.c
* gtk/gtkhscrollbar.c
* gtk/gtkvscale.c
* gtk/gtkvscrollbar.c: removed trailing , from enums

* gtk/gtksignal.c: can't use enums as a bitfield type, use guint

* gtk/testgtk.c: removed C++ comment added by owenpoo

-Yosh