N-ary version of logapp.
This supports readable appending of multiple bit chunks, e.g.
(logappn 32 base 8 padding 24 offset)
This belongs to a more general library.
Function:
(defun logappn-fn (args) (cond ((endp args) 0) ((endp (cdr args)) 0) (t (cons 'logapp (cons (car args) (cons (cadr args) (cons (logappn-fn (cddr args)) 'nil)))))))