SQL/MED catalog manipulation facilities

This doesn't do any remote or external things yet, but it gives modules
like plproxy and dblink a standardized and future-proof system for
managing their connection information.

Martin Pihlak and Peter Eisentraut

src/include/utils/syscache.h

@@ -9,7 +9,7 @@
  * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/utils/syscache.h,v 1.72 2008/05/07 01:04:49 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/utils/syscache.h,v 1.73 2008/12/19 16:25:19 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -51,6 +51,10 @@ enum SysCacheIdentifier
 	DATABASEOID,
 	ENUMOID,
 	ENUMTYPOIDNAME,
+	FOREIGNDATAWRAPPERNAME,
+	FOREIGNDATAWRAPPEROID,
+	FOREIGNSERVERNAME,
+	FOREIGNSERVEROID,
 	INDEXRELID,
 	LANGNAME,
 	LANGOID,
@@ -76,7 +80,9 @@ enum SysCacheIdentifier
 	TSTEMPLATENAMENSP,
 	TSTEMPLATEOID,
 	TYPENAMENSP,
-	TYPEOID
+	TYPEOID,
+	USERMAPPINGOID,
+	USERMAPPINGUSERSERVER
 };
 
 extern void InitCatalogCache(void);