Change pg_listener attribute number constants to match the usual pattern

It appears that, for no particularly good reason, pg_listener.h deviates from
the usual convention for declaring attribute number constants.  Normally, it's

#define Anum_{catalog-name}_{column-name}  {attribute-number}

pg_listener.h, however substitutes a different string that is similar, but not
the same as, the column name.  This change fixes that.

Author: Robert Haas <robertmhaas@gmail.com>

src/backend/commands/async.c

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/commands/async.c,v 1.147 2009/06/11 14:48:55 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/commands/async.c,v 1.148 2009/07/21 20:24:51 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -486,8 +486,8 @@ Exec_Listen(Relation lRel, const char *relname)
 
 	namestrcpy(&condname, relname);
 	values[Anum_pg_listener_relname - 1] = NameGetDatum(&condname);
-	values[Anum_pg_listener_pid - 1] = Int32GetDatum(MyProcPid);
-	values[Anum_pg_listener_notify - 1] = Int32GetDatum(0);		/* no notifies pending */
+	values[Anum_pg_listener_listenerpid - 1] = Int32GetDatum(MyProcPid);
+	values[Anum_pg_listener_notification - 1] = Int32GetDatum(0);		/* no notifies pending */
 
 	tuple = heap_form_tuple(RelationGetDescr(lRel), values, nulls);
 
@@ -567,7 +567,7 @@ Exec_UnlistenAll(Relation lRel)
 
 	/* Find and delete all entries with my listenerPID */
 	ScanKeyInit(&key[0],
-				Anum_pg_listener_pid,
+				Anum_pg_listener_listenerpid,
 				BTEqualStrategyNumber, F_INT4EQ,
 				Int32GetDatum(MyProcPid));
 	scan = heap_beginscan(lRel, SnapshotNow, 1, key);
@@ -598,9 +598,9 @@ Send_Notify(Relation lRel)
 	/* preset data to update notify column to MyProcPid */
 	memset(nulls, false, sizeof(nulls));
 	memset(repl, false, sizeof(repl));
-	repl[Anum_pg_listener_notify - 1] = true;
+	repl[Anum_pg_listener_notification - 1] = true;
 	memset(value, 0, sizeof(value));
-	value[Anum_pg_listener_notify - 1] = Int32GetDatum(MyProcPid);
+	value[Anum_pg_listener_notification - 1] = Int32GetDatum(MyProcPid);
 
 	scan = heap_beginscan(lRel, SnapshotNow, 0, NULL);
 
@@ -978,7 +978,7 @@ ProcessIncomingNotify(void)
 
 	/* Scan only entries with my listenerPID */
 	ScanKeyInit(&key[0],
-				Anum_pg_listener_pid,
+				Anum_pg_listener_listenerpid,
 				BTEqualStrategyNumber, F_INT4EQ,
 				Int32GetDatum(MyProcPid));
 	scan = heap_beginscan(lRel, SnapshotNow, 1, key);
@@ -986,9 +986,9 @@ ProcessIncomingNotify(void)
 	/* Prepare data for rewriting 0 into notification field */
 	memset(nulls, false, sizeof(nulls));
 	memset(repl, false, sizeof(repl));
-	repl[Anum_pg_listener_notify - 1] = true;
+	repl[Anum_pg_listener_notification - 1] = true;
 	memset(value, 0, sizeof(value));
-	value[Anum_pg_listener_notify - 1] = Int32GetDatum(0);
+	value[Anum_pg_listener_notification - 1] = Int32GetDatum(0);
 
 	while ((lTuple = heap_getnext(scan, ForwardScanDirection)) != NULL)
 	{

src/include/catalog/pg_listener.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/catalog/pg_listener.h,v 1.25 2009/01/01 17:23:57 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/pg_listener.h,v 1.26 2009/07/21 20:24:51 petere Exp $
  *
  * NOTES
  *	  the genbki.sh script reads this file and generates .bki
@@ -48,8 +48,8 @@ typedef FormData_pg_listener *Form_pg_listener;
  */
 #define Natts_pg_listener						3
 #define Anum_pg_listener_relname				1
-#define Anum_pg_listener_pid					2
-#define Anum_pg_listener_notify					3
+#define Anum_pg_listener_listenerpid			2
+#define Anum_pg_listener_notification			3
 
 /* ----------------
  *		initial contents of pg_listener are NOTHING.