Updated m4 + doc/common.

diff --git a/doc/common b/doc/common
index 95d92dd..cc80f24 160000 (submodule)
--- a/doc/common
+++ b/doc/common
@@ -1 +1 @@
-Subproject commit 95d92dd6e49fe3807fd1d6c664b3883580290103
+Subproject commit cc80f24dcf550d033c2fdf29ea35b4e0961f357d

diff --git a/m4 b/m4
index 2ceb2c3..f560129 160000 (submodule)
--- a/m4
+++ b/m4
@@ -1 +1 @@
-Subproject commit 2ceb2c3a4b580e09aadcbd1cbbb12e10b60f1337
+Subproject commit f5601296c571639de99e08ad41493c6d5be06a9a