Vim 8.1 release
Update version number and information. Fix a couple of tests.
diff --git a/READMEdir/README_extra.txt b/READMEdir/README_extra.txt
index c42043e..ce629b2 100644
--- a/READMEdir/README_extra.txt
+++ b/READMEdir/README_extra.txt
@@ -1,4 +1,4 @@
-README_extra.txt for version 8.0 of Vim: Vi IMproved.
+README_extra.txt for version 8.1 of Vim: Vi IMproved.
These extra files of Vim are for special purposes. This README explains what
the files are for. For general information about Vim, see the "README.txt"