Fix a whole bunch of #includes that were either wrong or redundant.

The first rule of portability for us is 'thou shalt have no other gods
before c.h', and a whole lot of these files were either not including
c.h at all, or including random system headers beforehand, either of
which sins can mess up largefile support nicely.  Once you have
included c.h, there is no need to re-include what it includes, either.

src/port/crypt.c

@@ -43,10 +43,7 @@ __RCSID("$NetBSD: crypt.c,v 1.18 2001/03/01 14:37:35 wiz Exp $");
 
 #include "c.h"
 
-#include <stddef.h>
-#include <sys/types.h>
 #include <limits.h>
-#include <stdlib.h>
 
 #ifndef WIN32
 #include <unistd.h>

src/port/fseeko.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/port/fseeko.c,v 1.17 2004/12/31 22:03:53 pgsql Exp $
+ *	  $PostgreSQL: pgsql/src/port/fseeko.c,v 1.18 2005/07/28 04:03:14 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -24,10 +24,8 @@
 #ifdef bsdi
 #include <pthread.h>
 #endif
-#include <stdio.h>
-#include <sys/types.h>
 #include <sys/stat.h>
-#include <errno.h>
+
 
 /*
  *	On BSD/OS and NetBSD, off_t and fpos_t are the same.  Standards

src/port/getaddrinfo.c

@@ -12,7 +12,7 @@
  * Copyright (c) 2003-2005, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/port/getaddrinfo.c,v 1.16 2005/01/01 20:44:33 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/port/getaddrinfo.c,v 1.17 2005/07/28 04:03:14 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -21,7 +21,6 @@
 #include "c.h"
 
 #ifndef WIN32_CLIENT_ONLY
-#include <sys/types.h>
 #include <sys/socket.h>
 #include <netdb.h>
 #include <netinet/in.h>

src/port/gethostname.c

@@ -7,15 +7,13 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/port/gethostname.c,v 1.6 2004/12/31 22:03:53 pgsql Exp $
+ *	  $PostgreSQL: pgsql/src/port/gethostname.c,v 1.7 2005/07/28 04:03:14 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
 
 #include "c.h"
 
-#include <string.h>
-
 #include <sys/utsname.h>
 
 int

src/port/getopt.c

@@ -34,14 +34,10 @@
 
 #include "c.h"
 
-
 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = "@(#)getopt.c	8.3 (Berkeley) 4/27/95";
 #endif   /* LIBC_SCCS and not lint */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
 
 int			opterr = 1,			/* if error message should be printed */
 			optind = 1,			/* index into parent argv vector */

src/port/getopt_long.c

@@ -35,19 +35,22 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $PostgreSQL: pgsql/src/port/getopt_long.c,v 1.3 2003/11/29 19:52:13 pgsql Exp $
+ * $PostgreSQL: pgsql/src/port/getopt_long.c,v 1.4 2005/07/28 04:03:14 tgl Exp $
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include "c.h"
 
 #include "getopt_long.h"
 
+#ifndef HAVE_INT_OPTRESET
+int			optreset;
+#endif
+
 #define BADCH	'?'
 #define BADARG	':'
 #define EMSG	""
 
+
 int
 getopt_long(int argc, char *const argv[],
 			const char *optstring,

src/port/getrusage.c

@@ -8,15 +8,13 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/port/getrusage.c,v 1.9 2005/05/16 05:52:13 neilc Exp $
+ *	  $PostgreSQL: pgsql/src/port/getrusage.c,v 1.10 2005/07/28 04:03:14 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
 
-#include <stdio.h>
-#include <errno.h>
-
 #include "c.h"
+
 #include "rusagestub.h"
 
 /* This code works on:

src/port/memcmp.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/port/memcmp.c,v 1.7 2004/12/31 22:03:53 pgsql Exp $
+ *	  $PostgreSQL: pgsql/src/port/memcmp.c,v 1.8 2005/07/28 04:03:14 tgl Exp $
  *
  * This file was taken from NetBSD and is used by SunOS because memcmp
  * on that platform does not properly compare negative bytes. The
@@ -46,7 +46,8 @@
  * SUCH DAMAGE.
  */
 
-#include <string.h>
+#include "c.h"
+
 
 /*
  * Compare memory regions.

src/port/noblock.c

@@ -7,16 +7,16 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/port/noblock.c,v 1.6 2005/03/25 00:34:31 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/port/noblock.c,v 1.7 2005/07/28 04:03:14 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
 
 #include "c.h"
 
-#include <sys/types.h>
 #include <fcntl.h>
 
+
 bool
 pg_set_noblock(int sock)
 {

src/port/open.c

@@ -6,17 +6,17 @@
  *
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/port/open.c,v 1.9 2005/03/24 04:36:20 momjian Exp $
+ * $PostgreSQL: pgsql/src/port/open.c,v 1.10 2005/07/28 04:03:14 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
 
 #ifdef WIN32
 
-#include <postgres.h>
+#include "c.h"
+
 #include <windows.h>
 #include <fcntl.h>
-#include <errno.h>
 #include <assert.h>
 
 int win32_open(const char *fileName, int fileFlags, ...);

src/port/qsort.c

@@ -3,7 +3,7 @@
  *	  Add do ... while() macro fix
  *	  Remove __inline, _DIAGASSERTs, __P
  *
- *	$PostgreSQL: pgsql/src/port/qsort.c,v 1.6 2005/05/25 21:40:43 momjian Exp $
+ *	$PostgreSQL: pgsql/src/port/qsort.c,v 1.7 2005/07/28 04:03:14 tgl Exp $
  */
 
 /*	$NetBSD: qsort.c,v 1.13 2003/08/07 16:43:42 agc Exp $	*/
@@ -37,9 +37,7 @@
  * SUCH DAMAGE.
  */
 
-#include <stdlib.h>
-#include <errno.h>
-#include <sys/types.h>
+#include "c.h"
 
 
 static char *med3(char *, char *, char *,

src/port/random.c

@@ -8,16 +8,15 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/port/random.c,v 1.5 2004/12/31 22:03:53 pgsql Exp $
+ *	  $PostgreSQL: pgsql/src/port/random.c,v 1.6 2005/07/28 04:03:14 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
 
 #include "c.h"
 
-#include <stdlib.h>
 #include <math.h>
-#include <errno.h>
+
 
 long
 random()

src/port/snprintf.c

@@ -32,7 +32,7 @@
  * SUCH DAMAGE.
  */
 
-#include "postgres.h"
+#include "c.h"
 
 #ifndef WIN32
 #include <sys/ioctl.h>
@@ -62,7 +62,7 @@
  * causing nasty effects.
  **************************************************************/
 
-/*static char _id[] = "$PostgreSQL: pgsql/src/port/snprintf.c,v 1.27 2005/04/14 20:53:09 tgl Exp $";*/
+/*static char _id[] = "$PostgreSQL: pgsql/src/port/snprintf.c,v 1.28 2005/07/28 04:03:14 tgl Exp $";*/
 
 static void dopr(char *buffer, const char *format, va_list args, char *end);
 

src/port/srandom.c

@@ -8,16 +8,15 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/port/srandom.c,v 1.5 2004/12/31 22:03:53 pgsql Exp $
+ *	  $PostgreSQL: pgsql/src/port/srandom.c,v 1.6 2005/07/28 04:03:14 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
 
 #include "c.h"
 
-#include <stdlib.h>
 #include <math.h>
-#include <errno.h>
+
 
 void
 srandom(unsigned int seed)

src/port/strdup.c

@@ -8,15 +8,16 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/port/strdup.c,v 1.6 2004/12/31 22:03:53 pgsql Exp $
+ *	  $PostgreSQL: pgsql/src/port/strdup.c,v 1.7 2005/07/28 04:03:14 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
 
-#include <string.h>
-#include <stdlib.h>
+#include "c.h"
+
 #include "strdup.h"
 
+
 char *
 strdup(char const * string)
 {

src/port/strerror.c

-/* $PostgreSQL: pgsql/src/port/strerror.c,v 1.4 2005/02/22 04:43:16 momjian Exp $ */
+/* $PostgreSQL: pgsql/src/port/strerror.c,v 1.5 2005/07/28 04:03:14 tgl Exp $ */
 
 /*
  * strerror - map error number to descriptive string
@@ -9,9 +9,8 @@
  * modified for ANSI by D'Arcy J.M. Cain
  */
 
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
+#include "c.h"
+
 
 extern const char *const sys_errlist[];
 extern int	sys_nerr;

src/port/strtol.c

@@ -36,10 +36,11 @@
 static char sccsid[] = "@(#)strtol.c	5.4 (Berkeley) 2/23/91";
 #endif   /* LIBC_SCCS and not lint */
 
+#include "c.h"
+
 #include <limits.h>
 #include <ctype.h>
-#include <errno.h>
-#include <stdlib.h>
+
 
 #define const
 

src/port/strtoul.c

@@ -35,10 +35,11 @@
 static char sccsid[] = "@(#)strtoul.c	8.1 (Berkeley) 6/4/93";
 #endif   /* LIBC_SCCS and not lint */
 
+#include "c.h"
+
 #include <limits.h>
 #include <ctype.h>
-#include <errno.h>
-#include <stdlib.h>
+
 
 /*
  * Convert a string to an unsigned long integer.

src/port/thread.c

@@ -7,15 +7,13 @@
  *
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/port/thread.c,v 1.29 2004/12/31 22:03:53 pgsql Exp $
+ * $PostgreSQL: pgsql/src/port/thread.c,v 1.30 2005/07/28 04:03:14 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
 
 #include "c.h"
 
-#include <sys/types.h>
-#include <errno.h>
 #ifdef WIN32_CLIENT_ONLY
 #undef ERROR
 #else
@@ -25,6 +23,7 @@
 #include <pthread.h>
 #endif
 
+
 /*
  *	Threading sometimes requires specially-named versions of functions
  *	that return data in static buffers, like strerror_r() instead of