Add missing TarHeader.php

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

diff --git a/3rdparty b/3rdparty
index 123f925a42d6ce5e2ce7a0da67300d6534303eb8..b0f6df380578eb2e204b9f0c94f092bd8bafb3cd 160000 (submodule)
--- a/3rdparty
+++ b/3rdparty
@@ -1 +1 @@
-Subproject commit 123f925a42d6ce5e2ce7a0da67300d6534303eb8
+Subproject commit b0f6df380578eb2e204b9f0c94f092bd8bafb3cd