minor bugfix based on Issue 50: 'pg_log' in PG10 was renamed to 'log'

Author: gsmolk

src/pg_probackup.c

@@ -442,7 +442,7 @@ main(int argc, char *argv[])
 		for (i = 0; pgdata_exclude_dir[i]; i++);		/* find first empty slot */
 
 		/* Set 'pg_log' in first empty slot */
-		pgdata_exclude_dir[i] = "pg_log";
+		pgdata_exclude_dir[i] = PG_LOG_DIR;
 	}
 
 	if (backup_subcmd == VALIDATE_CMD || backup_subcmd == RESTORE_CMD)

src/pg_probackup.h

@@ -36,8 +36,10 @@
 #define BACKUPS_DIR				"backups"
 #if PG_VERSION_NUM >= 100000
 #define PG_XLOG_DIR				"pg_wal"
+#define PG_LOG_DIR 				"log"
 #else
 #define PG_XLOG_DIR				"pg_xlog"
+#define PG_LOG_DIR 				"pg_log"
 #endif
 #define PG_TBLSPC_DIR			"pg_tblspc"
 #define PG_GLOBAL_DIR			"global"