Don't keep permissions by default if we are root.

diff -aur tar-1.16.orig/src/extract.c tar-1.16/src/extract.c
--- tar-1.16.orig/src/extract.c	2006-06-24 18:56:56.000000000 +0200
+++ tar-1.16/src/extract.c	2006-10-22 18:53:38.706626788 +0200
@@ -112,8 +112,6 @@
 extr_init (void)
 {
   we_are_root = geteuid () == 0;
-  same_permissions_option += we_are_root;
-  same_owner_option += we_are_root;
 
   /* Option -p clears the kernel umask, so it does not affect proper
      restoration of file permissions.  New intermediate directories will