Fix boost not found on debian-testing MP-628

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

diff --git a/m4 b/m4
index 6240d72..cbe5631 160000 (submodule)
--- a/m4
+++ b/m4
@@ -1 +1 @@
-Subproject commit 6240d7208a43d012f6c928f738c958122996dbf1
+Subproject commit cbe5631365b3ef5a840942cab5e03a50a665fe07