heap_fetch requires buffer pointer, must be released; heap_getnext

no longer returns buffer pointer, can be gotten from scan;
	descriptor; bootstrap can create multi-key indexes;
pg_procname index now is multi-key index; oidint2, oidint4, oidname
are gone (must be removed from regression tests); use System Cache
rather than sequential scan in many places; heap_modifytuple no
longer takes buffer parameter; remove unused buffer parameter in
a few other functions; oid8 is not index-able; remove some use of
single-character variable names; cleanup Buffer variables usage
and scan descriptor looping; cleaned up allocation and freeing of
tuples; 18k lines of diff;

src/backend/utils/cache/inval.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/cache/inval.c,v 1.11 1998/06/15 19:29:39 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/cache/inval.c,v 1.12 1998/08/19 02:03:11 momjian Exp $
  *
  * Note - this code is real crufty...
  *
@@ -267,7 +267,7 @@ getmyrelids()
 	MyAMRelationId = tuple->t_oid;
 
 	tuple = SearchSysCacheTuple(RELNAME,
-					   PointerGetDatum(AccessMethodOperatorRelationName),
+								PointerGetDatum(AccessMethodOperatorRelationName),
 								0, 0, 0);
 	Assert(HeapTupleIsValid(tuple));
 	MyAMOPRelationId = tuple->t_oid;
@@ -476,7 +476,7 @@ RelationInvalidateRelationCache(Relation relation,
 	 * ----------------
 	 */
 	ValidateHacks();			/* XXX */
-	relationId = RelationGetRelationId(relation);
+	relationId = RelationGetRelid(relation);
 
 	/* ----------------
 	 *