Improve our #include situation by moving pointer types away from the

corresponding struct definitions.  This allows other headers to avoid including
certain highly-loaded headers such as rel.h and relscan.h, instead using just
relcache.h, heapam.h or genam.h, which are more lightweight and thus cause less
unnecessary dependencies.

src/backend/utils/adt/dbsize.c

@@ -5,7 +5,7 @@
  * Copyright (c) 2002-2008, PostgreSQL Global Development Group
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/adt/dbsize.c,v 1.18 2008/03/31 01:31:43 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/adt/dbsize.c,v 1.19 2008/06/19 00:46:05 alvherre Exp $
  *
  */
 
@@ -24,8 +24,8 @@
 #include "storage/fd.h"
 #include "utils/acl.h"
 #include "utils/builtins.h"
+#include "utils/rel.h"
 #include "utils/syscache.h"
-#include "utils/relcache.h"
 
 
 /* Return physical size of directory contents, or 0 if dir doesn't exist */

src/backend/utils/adt/regproc.c

@@ -13,7 +13,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/adt/regproc.c,v 1.106 2008/03/26 21:10:39 alvherre Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/adt/regproc.c,v 1.107 2008/06/19 00:46:05 alvherre Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -25,6 +25,7 @@
 #include "access/heapam.h"
 #include "catalog/indexing.h"
 #include "catalog/namespace.h"
+#include "catalog/pg_class.h"
 #include "catalog/pg_operator.h"
 #include "catalog/pg_proc.h"
 #include "catalog/pg_ts_config.h"

src/backend/utils/adt/tid.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/adt/tid.c,v 1.61 2008/05/12 00:00:51 alvherre Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/adt/tid.c,v 1.62 2008/06/19 00:46:05 alvherre Exp $
  *
  * NOTES
  *	  input routine largely stolen from boxin().
@@ -29,6 +29,7 @@
 #include "parser/parsetree.h"
 #include "utils/acl.h"
 #include "utils/builtins.h"
+#include "utils/rel.h"
 #include "utils/tqual.h"
 
 

src/backend/utils/cache/catcache.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/cache/catcache.c,v 1.143 2008/05/12 00:00:51 alvherre Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/cache/catcache.c,v 1.144 2008/06/19 00:46:05 alvherre Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -17,6 +17,7 @@
 #include "access/genam.h"
 #include "access/hash.h"
 #include "access/heapam.h"
+#include "access/relscan.h"
 #include "access/sysattr.h"
 #include "access/valid.h"
 #include "catalog/pg_operator.h"
@@ -28,7 +29,7 @@
 #include "utils/builtins.h"
 #include "utils/fmgroids.h"
 #include "utils/memutils.h"
-#include "utils/relcache.h"
+#include "utils/rel.h"
 #include "utils/resowner.h"
 #include "utils/syscache.h"
 #include "utils/tqual.h"

src/backend/utils/cache/inval.c

@@ -80,7 +80,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/cache/inval.c,v 1.84 2008/03/13 18:00:32 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/cache/inval.c,v 1.85 2008/06/19 00:46:05 alvherre Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -94,7 +94,7 @@
 #include "storage/smgr.h"
 #include "utils/inval.h"
 #include "utils/memutils.h"
-#include "utils/relcache.h"
+#include "utils/rel.h"
 #include "utils/syscache.h"
 
 

src/backend/utils/cache/syscache.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/cache/syscache.c,v 1.116 2008/05/12 00:00:52 alvherre Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/cache/syscache.c,v 1.117 2008/06/19 00:46:05 alvherre Exp $
  *
  * NOTES
  *	  These routines allow the parser/planner/executor to perform
@@ -46,6 +46,7 @@
 #include "catalog/pg_ts_parser.h"
 #include "catalog/pg_ts_template.h"
 #include "catalog/pg_type.h"
+#include "utils/rel.h"
 #include "utils/syscache.h"
 
 

src/backend/utils/cache/typcache.c

@@ -36,7 +36,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/cache/typcache.c,v 1.27 2008/01/01 19:45:53 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/cache/typcache.c,v 1.28 2008/06/19 00:46:05 alvherre Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -49,6 +49,7 @@
 #include "commands/defrem.h"
 #include "utils/builtins.h"
 #include "utils/lsyscache.h"
+#include "utils/rel.h"
 #include "utils/syscache.h"
 #include "utils/typcache.h"
 

src/backend/utils/resowner/resowner.c

@@ -14,7 +14,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/resowner/resowner.c,v 1.28 2008/05/12 00:00:52 alvherre Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/resowner/resowner.c,v 1.29 2008/06/19 00:46:05 alvherre Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -24,8 +24,8 @@
 #include "storage/bufmgr.h"
 #include "storage/proc.h"
 #include "utils/memutils.h"
+#include "utils/rel.h"
 #include "utils/resowner.h"
-#include "utils/relcache.h"
 
 
 /*

src/backend/utils/sort/tuplesort.c

@@ -91,7 +91,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/sort/tuplesort.c,v 1.84 2008/05/12 00:00:53 alvherre Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/sort/tuplesort.c,v 1.85 2008/06/19 00:46:05 alvherre Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -112,6 +112,7 @@
 #include "utils/lsyscache.h"
 #include "utils/memutils.h"
 #include "utils/pg_rusage.h"
+#include "utils/rel.h"
 #include "utils/syscache.h"
 #include "utils/tuplesort.h"