Updated to latest m4.

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

diff --git a/m4 b/m4
index acee1cf..558c0ac 160000 (submodule)
--- a/m4
+++ b/m4
@@ -1 +1 @@
-Subproject commit acee1cf4678c8c0908d65fcbc19f49c7c5aa677f
+Subproject commit 558c0aca2c0eae982d72d3baef7252cd69f59a70