Make inclusion logic for sys/sem.h and sys/ipc.h consistent across all

the files that need them.  Per trouble report from Teodor.

src/backend/storage/ipc/ipc.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/storage/ipc/ipc.c,v 1.69 2001/09/29 04:02:23 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/storage/ipc/ipc.c,v 1.70 2001/10/01 18:16:26 tgl Exp $
  *
  * NOTES
  *
@@ -27,11 +27,10 @@
  */
 #include "postgres.h"
 
-#include <sys/types.h>
-#include <sys/file.h>
 #include <errno.h>
 #include <signal.h>
 #include <unistd.h>
+#include <sys/file.h>
 
 #include "storage/ipc.h"
 /* In Ultrix, sem.h and shm.h must be included AFTER ipc.h */
@@ -45,10 +44,6 @@
 #include <kernel/OS.h>
 #endif
 
-#if defined(solaris_sparc)
-#include <sys/ipc.h>
-#endif
-
 #if defined(__darwin__)
 #include "port/darwin/sem.h"
 #endif