ioctl & FIONREAD need more includes on Solarish systems.

*** 14,29 ****
--- 14,31 ----
   */
  
  #include <sys/types.h>
  #include <sys/socket.h>
  #include <sys/ioctl.h>
+ #include <sys/filio.h>
  #include <sys/poll.h>
  #include <netdb.h>
  
  #include <stdlib.h>
  #include <unistd.h>
  #include <string.h>
+ #include <stropts.h>
  #include <stdio.h>
  
  #include <errno.h>
  
  #include <s2n.h>