Call gdk_keyval_to_lower() on the key passed in, since we lowercase all

Call gdk_keyval_to_lower() on the key passed in, since we lowercase all

Fri Mar 29 18:09:18 2002  Owen Taylor  <otaylor@redhat.com>

        * gtk/gtkaccelgroup.c (gtk_accel_group_query): Call
        gdk_keyval_to_lower() on the key passed in, since we
        lowercase all other key vals passed in, so querying
        keyvals will otherwise fail if the caller used
        an uppercase accelerators (#76899, Vitaly Tishkov)