submodules: update to latest

[bison.git] / submodules / autoconf

diff --git a/submodules/autoconf b/submodules/autoconf
index fb069ddf299107885435573544279c07df9d0b50..ef8940d9b5a3fe2866027f82a535915da3e78829 160000 (submodule)
--- a/submodules/autoconf
+++ b/submodules/autoconf
@@ -1 +1 @@
-Subproject commit fb069ddf299107885435573544279c07df9d0b50
+Subproject commit ef8940d9b5a3fe2866027f82a535915da3e78829