release version 9.0

Problem:    About time to release Vim 9.0.
Solution:   Update the version number everywhere.
diff --git a/READMEdir/README_ami.txt b/READMEdir/README_ami.txt
index 7ea4332..b0f8b2d 100644
--- a/READMEdir/README_ami.txt
+++ b/READMEdir/README_ami.txt
@@ -1,4 +1,4 @@
-README_ami.txt for version 8.2 of Vim: Vi IMproved.
+README_ami.txt for version 9.0 of Vim: Vi IMproved.
 
 This file explains the installation of Vim on Amiga systems.
 See README.txt for general information about Vim.
@@ -16,8 +16,8 @@
 You would then unpack the archives like this:
 
   cd dh0:editors
-  tar xf t:vim82bin.tar
-  tar xf t:vim82rt.tar
+  tar xf t:vim90bin.tar
+  tar xf t:vim90rt.tar
 
 Set the $VIM environment variable to point to the top directory of your Vim
 files.  For the above example: