ioctl & FIONREAD need more includes on Solarish systems.

@@ -14,16 +14,18 @@
  */
 
 #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>