Move connect.h from fe_utils to src/include/common.

Any libpq client can use the header.  Clients include backend components
postgres_fdw, dblink, and logical replication apply worker.  Back-patch
to v10, because another fix needs this.  In released branches, just copy
the header and keep the original.

contrib/oid2name/oid2name.c

@@ -10,8 +10,8 @@
 #include "postgres_fe.h"
 
 #include "catalog/pg_class_d.h"
+#include "common/connect.h"
 #include "common/logging.h"
-#include "fe_utils/connect.h"
 #include "getopt_long.h"
 #include "libpq-fe.h"
 #include "pg_getopt.h"

contrib/vacuumlo/vacuumlo.c

@@ -22,8 +22,8 @@
 #endif
 
 #include "catalog/pg_class_d.h"
+#include "common/connect.h"
 #include "common/logging.h"
-#include "fe_utils/connect.h"
 #include "getopt_long.h"
 #include "libpq-fe.h"
 #include "pg_getopt.h"

src/bin/pg_basebackup/streamutil.c

@@ -18,11 +18,11 @@
 #include <unistd.h>
 
 #include "access/xlog_internal.h"
+#include "common/connect.h"
 #include "common/fe_memutils.h"
 #include "common/file_perm.h"
 #include "common/logging.h"
 #include "datatype/timestamp.h"
-#include "fe_utils/connect.h"
 #include "port/pg_bswap.h"
 #include "pqexpbuffer.h"
 #include "receivelog.h"

src/bin/pg_dump/pg_backup_db.c

@@ -17,8 +17,8 @@
 #include <termios.h>
 #endif
 
+#include "common/connect.h"
 #include "dumputils.h"
-#include "fe_utils/connect.h"
 #include "fe_utils/string_utils.h"
 #include "parallel.h"
 #include "pg_backup_archiver.h"

src/bin/pg_dump/pg_dump.c

@@ -52,8 +52,8 @@
 #include "catalog/pg_proc_d.h"
 #include "catalog/pg_trigger_d.h"
 #include "catalog/pg_type_d.h"
+#include "common/connect.h"
 #include "dumputils.h"
-#include "fe_utils/connect.h"
 #include "fe_utils/string_utils.h"
 #include "getopt_long.h"
 #include "libpq/libpq-fs.h"

src/bin/pg_dump/pg_dumpall.c

@@ -18,10 +18,10 @@
 #include <time.h>
 #include <unistd.h>
 
+#include "common/connect.h"
 #include "common/file_utils.h"
 #include "common/logging.h"
 #include "dumputils.h"
-#include "fe_utils/connect.h"
 #include "fe_utils/string_utils.h"
 #include "getopt_long.h"
 #include "pg_backup.h"

src/bin/pg_rewind/libpq_fetch.c

@@ -15,8 +15,8 @@
 #include <unistd.h>
 
 #include "catalog/pg_type_d.h"
+#include "common/connect.h"
 #include "datapagemap.h"
-#include "fe_utils/connect.h"
 #include "fetch.h"
 #include "file_ops.h"
 #include "filemap.h"

src/bin/pg_upgrade/server.c

@@ -9,7 +9,7 @@
 
 #include "postgres_fe.h"
 
-#include "fe_utils/connect.h"
+#include "common/connect.h"
 #include "fe_utils/string_utils.h"
 #include "pg_upgrade.h"
 

src/bin/scripts/common.c

@@ -18,9 +18,9 @@
 #include <unistd.h>
 
 #include "common.h"
+#include "common/connect.h"
 #include "common/logging.h"
 #include "fe_utils/cancel.h"
-#include "fe_utils/connect.h"
 #include "fe_utils/string_utils.h"
 
 #define ERRCODE_UNDEFINED_TABLE  "42P01"

src/bin/scripts/reindexdb.c

@@ -13,9 +13,9 @@
 
 #include "catalog/pg_class_d.h"
 #include "common.h"
+#include "common/connect.h"
 #include "common/logging.h"
 #include "fe_utils/cancel.h"
-#include "fe_utils/connect.h"
 #include "fe_utils/simple_list.h"
 #include "fe_utils/string_utils.h"
 #include "scripts_parallel.h"

src/bin/scripts/vacuumdb.c

@@ -15,9 +15,9 @@
 #include "catalog/pg_class_d.h"
 
 #include "common.h"
+#include "common/connect.h"
 #include "common/logging.h"
 #include "fe_utils/cancel.h"
-#include "fe_utils/connect.h"
 #include "fe_utils/simple_list.h"
 #include "fe_utils/string_utils.h"
 #include "scripts_parallel.h"

src/fe_utils/cancel.c

@@ -18,8 +18,8 @@
 
 #include <unistd.h>
 
+#include "common/connect.h"
 #include "fe_utils/cancel.h"
-#include "fe_utils/connect.h"
 #include "fe_utils/string_utils.h"
 
 

src/include/common/connect.h

@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * src/include/fe_utils/connect.h
+ * src/include/common/connect.h
  *
  *-------------------------------------------------------------------------
  */

src/tools/findoidjoins/findoidjoins.c

@@ -10,7 +10,7 @@
 #include "access/transam.h"
 #include "catalog/pg_class_d.h"
 
-#include "fe_utils/connect.h"
+#include "common/connect.h"
 #include "libpq-fe.h"
 #include "pqexpbuffer.h"