doc: remove older ChangeLog items

* Makefile.am: Update the oldest documented version
to 8.20 which is now about 5 years old.

diff --git a/Makefile.am b/Makefile.am
index 11025b03bc095f26c5c78631f36773a6558acc65..7d3b8cff88b07949b76d45a5a34b63bb4eafb26b 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -93,7 +93,7 @@ dist-hook: gen-ChangeLog
        $(AM_V_at)touch $(distdir)/doc/constants.texi \
          $(distdir)/doc/coreutils.info
 
-gen_start_ver = 8.18
+gen_start_ver = 8.20
 .PHONY: gen-ChangeLog
 gen-ChangeLog:
        $(AM_V_GEN)if test -d .git; then                                \