maint: make copyright statements more consistent; update gnulib

* cfg.mk (update-copyright-env): Add UPDATE_COPYRIGHT_FORCE=1
to rejoin some split lines, and UPDATE_COPYRIGHT_USE_INTERVALS=2
to make update-copyright use only one year range.
* gnulib: Update to latest, for newer update-copyright script.

diff --git a/cfg.mk b/cfg.mk
index d4654eb..b4bd222 100644 (file)
--- a/cfg.mk
+++ b/cfg.mk
@@ -388,7 +388,8 @@ announcement_Cc_ = $(translation_project_), \
 -include $(srcdir)/dist-check.mk
 
 update-copyright-env = \
-  UPDATE_COPYRIGHT_USE_INTERVALS=1 \
+  UPDATE_COPYRIGHT_FORCE=1 \
+  UPDATE_COPYRIGHT_USE_INTERVALS=2 \
   UPDATE_COPYRIGHT_MAX_LINE_LENGTH=79
 
 # List syntax-check exemptions.

diff --git a/gnulib b/gnulib
index 3888ec8..4994b1a 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 3888ec889ae709349cc7d9f7c1707dedbff2e130
+Subproject commit 4994b1aab88924f5db960472c2189fa1b46c6778