Add a hack so that get_type_io_data() can work from bootstrap.c's

internal TypInfo table in bootstrap mode.  This allows array_in and
array_out to be used during early bootstrap, which eliminates the
former obstacle to giving OUT parameters to built-in functions.

src/include/bootstrap/bootstrap.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/bootstrap/bootstrap.h,v 1.42 2006/07/13 16:49:19 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/bootstrap/bootstrap.h,v 1.43 2006/08/15 22:36:17 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -50,6 +50,15 @@ extern char *CleanUpStr(char *s);
 extern int	EnterString(char *str);
 extern void build_indices(void);
 
+extern void boot_get_type_io_data(Oid typid,
+								  int16 *typlen,
+								  bool *typbyval,
+								  char *typalign,
+								  char *typdelim,
+								  Oid *typioparam,
+								  Oid *typinput,
+								  Oid *typoutput);
+
 extern int	boot_yyparse(void);
 
 extern int	boot_yylex(void);