new upstream version

- use the original file permissions when creating backup (#853102)

shadow-4.1.5.1-backup-mode.patch

@@ -0,0 +1,20 @@
+diff -up shadow-4.1.5.1/lib/commonio.c.backup-mode shadow-4.1.5.1/lib/commonio.c
+--- shadow-4.1.5.1/lib/commonio.c.backup-mode	2012-05-18 21:44:54.000000000 +0200
++++ shadow-4.1.5.1/lib/commonio.c	2012-09-19 20:27:16.089444234 +0200
+@@ -301,15 +301,12 @@ static int create_backup (const char *ba
+ 	struct utimbuf ub;
+ 	FILE *bkfp;
+ 	int c;
+-	mode_t mask;
+ 
+ 	if (fstat (fileno (fp), &sb) != 0) {
+ 		return -1;
+ 	}
+ 
+-	mask = umask (077);
+-	bkfp = fopen (backup, "w");
+-	(void) umask (mask);
++	bkfp = fopen_set_perms (backup, "w", &sb);
+ 	if (NULL == bkfp) {
+ 		return -1;
+ 	}