Vim 8.1 release

Update version number and information.  Fix a couple of tests.
diff --git a/runtime/doc/if_ole.txt b/runtime/doc/if_ole.txt
index be84f43..4ec9ac5 100644
--- a/runtime/doc/if_ole.txt
+++ b/runtime/doc/if_ole.txt
@@ -1,4 +1,4 @@
-*if_ole.txt*    For Vim version 8.0.  Last change: 2008 Aug 16
+*if_ole.txt*    For Vim version 8.1.  Last change: 2008 Aug 16
 
 
 		  VIM REFERENCE MANUAL    by Paul Moore