Vim 8.1 release

Update version number and information.  Fix a couple of tests.
diff --git a/runtime/syntax/upstreamrpt.vim b/runtime/syntax/upstreamrpt.vim
index 170fc8f..21c2563 100644
--- a/runtime/syntax/upstreamrpt.vim
+++ b/runtime/syntax/upstreamrpt.vim
@@ -307,4 +307,4 @@
 "hi def link upstreamdat_Filespec Underlined
 hi def link upstreamdat_Comment Comment
 
-let b:current_syntax = "upstreamdat"
+let b:current_syntax = "upstreamrpt"