Clean up some randomness associated with trace_recovery_messages: don't

put the variable declaration in the middle of a bunch of externs,
and do use extern where it should be used.

src/backend/utils/misc/guc.c

@@ -10,7 +10,7 @@
  * Written by Peter Eisentraut <peter_e@gmx.net>.
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.555 2010/06/15 07:52:10 itagaki Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.556 2010/06/17 17:44:40 tgl Exp $
  *
  *--------------------------------------------------------------------
  */
@@ -119,8 +119,6 @@ extern bool fullPageWrites;
 extern int	vacuum_defer_cleanup_age;
 extern int	ssl_renegotiation_limit;
 
-int			trace_recovery_messages = LOG;
-
 #ifdef TRACE_SORT
 extern bool trace_sort;
 #endif
@@ -375,6 +373,7 @@ int			log_min_messages = WARNING;
 int			client_min_messages = NOTICE;
 int			log_min_duration_statement = -1;
 int			log_temp_files = -1;
+int			trace_recovery_messages = LOG;
 
 int			num_temp_buffers = 1000;
 

src/include/miscadmin.h

@@ -13,7 +13,7 @@
  * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/miscadmin.h,v 1.220 2010/02/26 02:01:20 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/miscadmin.h,v 1.221 2010/06/17 17:44:40 tgl Exp $
  *
  * NOTES
  *	  some of the information in this file should be moved to other files.
@@ -242,7 +242,7 @@ extern void PreventCommandDuringRecovery(const char *cmdname);
 
 /* in utils/misc/guc.c */
 extern int	trace_recovery_messages;
-int			trace_recovery(int trace_level);
+extern int	trace_recovery(int trace_level);
 
 /*****************************************************************************
  *	  pdir.h --																 *