Restructure some header files a bit, in particular heapam.h, by removing some

unnecessary #include lines in it.  Also, move some tuple routine prototypes and
macros to htup.h, which allows removal of heapam.h inclusion from some .c
files.

For this to work, a new header file access/sysattr.h needed to be created,
initially containing attribute numbers of system columns, for pg_dump usage.

While at it, make contrib ltree, intarray and hstore header files more
consistent with our header style.

src/backend/access/heap/heapam.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/access/heap/heapam.c,v 1.255 2008/04/03 17:12:27 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/access/heap/heapam.c,v 1.256 2008/05/12 00:00:44 alvherre Exp $
  *
  *
  * INTERFACE ROUTINES
@@ -42,14 +42,18 @@
 #include "access/heapam.h"
 #include "access/hio.h"
 #include "access/multixact.h"
+#include "access/sysattr.h"
 #include "access/transam.h"
 #include "access/tuptoaster.h"
 #include "access/valid.h"
 #include "access/xact.h"
+#include "access/xlogutils.h"
 #include "catalog/catalog.h"
 #include "catalog/namespace.h"
 #include "miscadmin.h"
 #include "pgstat.h"
+#include "storage/bufmgr.h"
+#include "storage/lmgr.h"
 #include "storage/procarray.h"
 #include "storage/smgr.h"
 #include "utils/datum.h"

src/backend/access/heap/hio.c

@@ -8,16 +8,18 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/access/heap/hio.c,v 1.68 2008/01/01 19:45:46 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/access/heap/hio.c,v 1.69 2008/05/12 00:00:45 alvherre Exp $
  *
  *-------------------------------------------------------------------------
  */
 
 #include "postgres.h"
 
-#include "access/heapam.h"
 #include "access/hio.h"
+#include "storage/bufmgr.h"
+#include "storage/bufpage.h"
 #include "storage/freespace.h"
+#include "storage/lmgr.h"
 
 
 /*

src/backend/access/heap/pruneheap.c

@@ -8,16 +8,20 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/access/heap/pruneheap.c,v 1.9 2008/03/26 21:10:37 alvherre Exp $
+ *	  $PostgreSQL: pgsql/src/backend/access/heap/pruneheap.c,v 1.10 2008/05/12 00:00:45 alvherre Exp $
  *
  *-------------------------------------------------------------------------
  */
 #include "postgres.h"
 
 #include "access/heapam.h"
+#include "access/htup.h"
 #include "access/transam.h"
 #include "miscadmin.h"
 #include "pgstat.h"
+#include "storage/bufmgr.h"
+#include "storage/bufpage.h"
+#include "storage/off.h"
 #include "utils/inval.h"
 #include "utils/tqual.h"
 

src/backend/access/heap/rewriteheap.c

@@ -96,7 +96,7 @@
  * Portions Copyright (c) 1994-5, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/access/heap/rewriteheap.c,v 1.10 2008/01/01 19:45:46 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/access/heap/rewriteheap.c,v 1.11 2008/05/12 00:00:45 alvherre Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -106,6 +106,7 @@
 #include "access/rewriteheap.h"
 #include "access/transam.h"
 #include "access/tuptoaster.h"
+#include "storage/bufmgr.h"
 #include "storage/smgr.h"
 #include "utils/memutils.h"
 

src/backend/access/heap/syncscan.c

@@ -40,7 +40,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/access/heap/syncscan.c,v 1.4 2008/01/01 19:45:46 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/access/heap/syncscan.c,v 1.5 2008/05/12 00:00:45 alvherre Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -48,6 +48,9 @@
 
 #include "access/heapam.h"
 #include "miscadmin.h"
+#include "storage/block.h"
+#include "storage/relfilenode.h"
+#include "utils/rel.h"
 
 
 /* GUC variables */