CVS ignores symlinks, but I recently updated update-autotools to have
libtool copy files rather than symlink. Ignore these now copied files.
diff --git a/.cvsignore b/.cvsignore
index f85813c..f6dc6df 100644
--- a/.cvsignore
+++ b/.cvsignore
@@ -2,6 +2,9 @@
 config.h
 config.cache
 config.status
+config.guess
+config.sub
+ltmain.sh
 stamp-h
 stamp-h[0-9]*
 Makefile