When --dry-run is set, note when a directory is missing and avoid

trying to stat() any items inside that dir's hierarchy.  This fixes
a bug where a symlink to a dir getting replaced by a dir with
identical contents to the dir at the other end of the symlink would
not report the updated files in the new hierarchy. (See bug #1673)

generator.c

@@ -240,6 +240,7 @@ static void recv_generator(char *fname, struct file_list *flist,
 			   struct file_struct *file, int ndx,
 			   int f_out, int f_out_name)
 {
+	static int missing_below = -1;
 	int fd = -1, f_copy = -1;
 	STRUCT_STAT st, partial_st;
 	struct file_struct *back_file = NULL;
@@ -266,6 +267,10 @@ static void recv_generator(char *fname, struct file_list *flist,
 		return;
 	}
 
+	if (dry_run && missing_below >= 0 && file->dir.depth <= missing_below) {
+		dry_run--;
+		missing_below = -1;
+	}
 	if (dry_run > 1) {
 		statret = -1;
 		stat_errno = ENOENT;
@@ -303,6 +308,10 @@ static void recv_generator(char *fname, struct file_list *flist,
 			delete_file(fname, DEL_TERSE);
 			statret = -1;
 		}
+		if (dry_run && statret != 0 && missing_below < 0) {
+			missing_below = file->dir.depth;
+			dry_run++;
+		}
 		if (statret != 0 && do_mkdir(fname,file->mode) != 0 && errno != EEXIST) {
 			if (!relative_paths || errno != ENOENT
 			    || create_directory_path(fname, orig_umask) < 0