More cleanups of the include files

- centralizing to simplify the -I's required to compile

src/include/utils/relcache.h

@@ -0,0 +1,47 @@
+/*-------------------------------------------------------------------------
+ *
+ * relcache.h--
+ *    Relation descriptor cache definitions.
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: relcache.h,v 1.1 1996/08/28 01:59:24 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef	RELCACHE_H
+#define RELCACHE_H
+
+#include <sys/types.h>
+
+#include "postgres.h"
+#include "utils/rel.h"
+
+/*
+ * relation lookup routines
+ */
+extern Relation RelationIdCacheGetRelation(Oid relationId);
+extern Relation RelationNameCacheGetRelation(char *relationName);
+extern Relation RelationIdGetRelation(Oid relationId);
+extern Relation RelationNameGetRelation(char *relationName);
+extern Relation getreldesc(char *relationName);
+
+extern void RelationClose(Relation relation);
+extern void RelationFlushRelation(Relation *relationPtr,
+				  bool	onlyFlushReferenceCountZero);
+extern void RelationIdInvalidateRelationCacheByRelationId(Oid relationId);
+
+extern void 
+RelationIdInvalidateRelationCacheByAccessMethodId(Oid accessMethodId);
+
+extern void RelationCacheInvalidate(bool onlyFlushReferenceCountZero);
+
+extern void RelationRegisterRelation(Relation relation);
+extern void RelationPurgeLocalRelation(bool xactComitted);
+extern void RelationInitialize();
+extern void init_irels();
+extern void write_irels();
+
+
+#endif	/* RELCACHE_H */