 section of
                 * code.  You really do whatever you want as long
                 * as you follow RFC 3820.  In the example we use
                 * here, the simplest thing to do is to build
                 * another, temporary bit array and fill it with
                 * the rights granted by the current proxy
                 * certificate, then use it as a mask on the
                 * accumulated rights bit array, and voil&agrave;, you
                 * now have a new accumulated righ