(HPUX8): Define this before including hpux.h.

(HAVE_SYS_WAIT_H): #define deleted; we let Autoconf decide.

src/s/hpux8.h

@@ -4,10 +4,10 @@
    Our conjecture that they are needed for hpux version 8,
    which is what runs on the 700.  */
 
-#include "hpux.h"
-
 #define HPUX8
 
+#include "hpux.h"
+
 /* dob@inel.gov says HPUX 8.07 needs this.  He was using X11R5, I think.  */
 #define LIBX11_SYSTEM -lXext
 
@@ -69,6 +69,3 @@
 
 /* Enable a special hack in XTread_socket.  */
 #define X_IO_BUG
-
-/* Override hpux.h which undefs this flag.  */
-#define HAVE_SYS_WAIT_H