Merge branch 'REL_2_6' into release_2_6-pbckp-232

src/pg_probackup.c

@@ -78,6 +78,7 @@ pid_t       my_pid = 0;
 __thread int  my_thread_num = 1;
 bool		progress = false;
 bool		no_sync = false;
+time_t		start_time = 0;
 char	   *replication_slot = NULL;
 bool		temp_slot = false;
 bool perm_slot = false;