8634 epoll fails to wake on certain edge-triggered conditions
8635 epoll should not emit POLLNVAL
8636 recursive epoll should emit EPOLLRDNORM
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: Igor Kozhukhov <igor@dilos.org>

*** 147,157 ****
          int             bd_async;       /* non-zero if packet reception .. */
                                          /* .. should generate signal */
          int             bd_nonblock;    /* non-zero for non-blocking read */
          pid_t           bd_pgid;        /* process or group id for signal */
          int             bd_timedout;
-         struct pollhead bd_poll;
          timeout_id_t    bd_callout;     /* for BPF timeouts with select */
          pid_t           bd_pid;         /* corresponding PID */
          void            *bd_sih;        /* soft interrupt handle */
          /*
           * Solaris specific bits after this.
--- 147,156 ----