Vim 8.1 release

Update version number and information.  Fix a couple of tests.
diff --git a/READMEdir/README_amibin.txt b/READMEdir/README_amibin.txt
index 2e323f3..5b9b02f 100644
--- a/READMEdir/README_amibin.txt
+++ b/READMEdir/README_amibin.txt
@@ -1,8 +1,8 @@
-README_amibin.txt for version 8.0 of Vim: Vi IMproved.
+README_amibin.txt for version 8.1 of Vim: Vi IMproved.
 
 See "README.txt" for general information about Vim.
 See "README_ami.txt" for installation instructions for the Amiga.
-These files are in the runtime archive (vim80rt.tgz).
+These files are in the runtime archive (vim81rt.tgz).
 
 
 The Amiga "bin" archive contains the Vim executable for the Amiga.  It was