Update doc/common and m4

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

diff --git a/m4 b/m4
index 9d331ef..eda6995 160000 (submodule)
--- a/m4
+++ b/m4
@@ -1 +1 @@
-Subproject commit 9d331ef6b322bc17ffcd4c04728cc39b0b317e13
+Subproject commit eda6995523f2412995ee60b5fe6443dee3e0d156