NAME
        SetSuperAttrs -- Invoke OM_SET method on superclass with varargs.

   SYNOPSIS
        result = SetSuperAttrs( cl, obj, tag, ... )

        ULONG SetSuperAttrs( struct iclass *, object *, ulong, ... );

   FUNCTION
        Boopsi support function which invokes the OM_SET method on the
        superclass of the supplied class for the supplied object.  Allows
        the ops_AttrList to be supplied on the stack (i.e. in a varargs
        way).  The equivalent non-varargs function would simply be

            DoSuperMethod( cl, obj, OM_SET, taglist, NULL );

   INPUTS
        cl - pointer to boopsi class whose superclass is to
            receive the OM_SET message
        obj - pointer to boopsi object
        tag - list of tag-attribute pairs, ending in TAG_DONE

   RESULT
        result - class and message-specific result.

   NOTES
        This function first appears in the V37 release of amiga.lib.
        While it intrinsically does not require any particular release
        of the system software to operate, it is designed to work with
        the boopsi subsystem of Intuition, which was only introduced
        in V36.

   SEE ALSO
        coercemethoda(), domethoda(), dosupermethoda(), <intuition/classusr.h>
        ROM Kernel Manual boopsi section