Add --keepold option to cpw.

lib/kadm5/chpass_c.c

@@ -38,6 +38,7 @@ RCSID("$Id$");
 kadm5_ret_t
 kadm5_c_chpass_principal(void *server_handle,
 			 krb5_principal princ,
+			 int keepold,
 			 const char *password)
 {
     kadm5_client_context *context = server_handle;
@@ -59,6 +60,7 @@ kadm5_c_chpass_principal(void *server_handle,
     krb5_store_int32(sp, kadm_chpass);
     krb5_store_principal(sp, princ);
     krb5_store_string(sp, password);
+    krb5_store_int32(sp, keepold); /* extension */
     ret = _kadm5_client_send(context, sp);
     krb5_storage_free(sp);
     if (ret)