Depend on Boost.System for Boost >= 1.41.0

[metaproxy-moved-to-github.git] / m4

diff --git a/m4 b/m4
index c40c0ac..4f6aa8a 160000 (submodule)
--- a/m4
+++ b/m4
@@ -1 +1 @@
-Subproject commit c40c0aca772c390de538192e144b79af3831f0d7
+Subproject commit 4f6aa8a41e50ad350463ee2418c28a5b3c7279ff