Update copyright years to include 2014.
diff --git a/build/exe.mk b/build/exe.mk
index a44a9a9..6bf149e 100644
--- a/build/exe.mk
+++ b/build/exe.mk
@@ -1,6 +1,6 @@
 #  FLAC - Free Lossless Audio Codec
 #  Copyright (C) 2001-2009  Josh Coalson
-#  Copyright (C) 2011-2013  Xiph.Org Foundation
+#  Copyright (C) 2011-2014  Xiph.Org Foundation
 #
 #  This file is part the FLAC project.  FLAC is comprised of several
 #  components distributed under different licenses.  The codec libraries