Update to new logo

diff --git a/doc/common b/doc/common
index eee76a1..3194c01 160000 (submodule)
--- a/doc/common
+++ b/doc/common
@@ -1 +1 @@
-Subproject commit eee76a15493cb3f93cf6b88b9b7d87db17cdc85f
+Subproject commit 3194c01cfd794ce4553ffd568e0cdc3640dc3f05

diff --git a/m4 b/m4
index 67d13d0..acee1cf 160000 (submodule)
--- a/m4
+++ b/m4
@@ -1 +1 @@
-Subproject commit 67d13d0e0d554e1a5092de442dbd74a8f283af96
+Subproject commit acee1cf4678c8c0908d65fcbc19f49c7c5aa677f