patch 8.1.1339: installer needs to product name et al.

Problem:    Installer needs to product name et al.
Solution:   Add a few lines to the NSIS installer script. (Christian Brabandt)
diff --git a/nsis/gvim.nsi b/nsis/gvim.nsi
index 5416a0f..cb2664c 100644
--- a/nsis/gvim.nsi
+++ b/nsis/gvim.nsi
@@ -173,6 +173,16 @@
     !include "lang\tradchinese.nsi"
 !endif
 
+##########################################################
+# Version resources
+
+VIAddVersionKey /LANG=${LANG_ENGLISH} "ProductName" "Vim"
+VIAddVersionKey /LANG=${LANG_ENGLISH} "CompanyName" "Vim Developers"
+VIAddVersionKey /LANG=${LANG_ENGLISH} "LegalTrademarks" "Vim"
+VIAddVersionKey /LANG=${LANG_ENGLISH} "LegalCopyright" "Copyright (C) 1996"
+VIAddVersionKey /LANG=${LANG_ENGLISH} "FileDescription" "Vi Improved - A Text Editor"
+VIAddVersionKey /LANG=${LANG_ENGLISH} "FileVersion" "${VER_MAJOR}.${VER_MINOR}.0.0"
+VIProductVersion "${VER_MAJOR}.${VER_MINOR}.0.0"
 
 # Global variables
 Var vim_dialog