## trunk tip older than vendor branch tip

At version 1.26, produced a content mismatch:

esr@snark:~/WWW/cvs-fast-export/tests$ cvsconvert -n oldhead.testrepo
cvsconvert: processing oldhead.testrepo/module
cvs-fast-export: Unnumbered head import-1.1.1 in ChangeLog
cvs-fast-export: no commitids before 2006-06-30T13:21:39Z.
oldhead.testrepo branch master: oldhead.testrepo.checkout/Makefile.am and oldhead.testrepo-git/Makefile.am are different.
--- oldhead.testrepo.checkout/Makefile.am	2014-11-24 14:27:37.227257132 -0500
+++ oldhead.testrepo-git/Makefile.am	2014-11-24 14:27:37.215256857 -0500
@@ -1 +1 @@
-Makefile.am,v content for 1.2
+Makefile.am,v content for 1.1.1.1

This problem was solved by the commit labeled 'Major simplification
and improvement of vendor branch handling.'
