Updated to new M4.

[pazpar2-moved-to-github.git] / m4

diff --git a/m4 b/m4
index a3d7a33..acee1cf 160000 (submodule)
--- a/m4
+++ b/m4
@@ -1 +1 @@
-Subproject commit a3d7a3375702caae9794ae3a724e51ae9ee46ac3
+Subproject commit acee1cf4678c8c0908d65fcbc19f49c7c5aa677f