Automatic update of common submodule

From e8c7a71 to 3fa2c9e

diff --git a/common b/common
index e8c7a71..3fa2c9e 160000 (submodule)
--- a/common
+++ b/common
@@ -1 +1 @@
-Subproject commit e8c7a71bf3e2ee48f682011bd63d64a8c78ea3b6
+Subproject commit 3fa2c9e372bceec30be91e67fb02b6cb05bed493