patch 9.1.1029: the installer can be improved

Problem:  the installer can be improved
Solution: update the installer with the correct README and LICENSE
          files, improve the documentation, add a Makefile for the
          installer, update the Makefiles (RestorerZ)

fixes: #16378
closes: #16378

Signed-off-by: RestorerZ <restorer@mail2k.ru>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/nsis/lang/greek.nsi b/nsis/lang/greek.nsi
index b92d3f3..d746cb3 100644
--- a/nsis/lang/greek.nsi
+++ b/nsis/lang/greek.nsi
@@ -21,15 +21,15 @@
 # Translated license file for the license page                            {{{1
 ##############################################################################
 
-LicenseLangString page_lic_file 0 "${VIMRT}\doc\uganda.nsis.txt"
-#LicenseLangString page_lic_file ${LANG_GREEK} "${VIMRT}\doc\uganda.nsis.elx"
+LicenseLangString page_lic_file 0 "..\lang\LICENSE.nsis.txt"
+#LicenseLangString page_lic_file ${LANG_GREEK} "..\lang\LICENSE.el.nsis.txt"
 
 ##############################################################################
 # Translated README.txt file, which is opened after installation          {{{1
 ##############################################################################
 
 LangString vim_readme_file 0 "README.txt"
-#LangString vim_readme_file ${LANG_GREEK} "README.elx.txt"
+#LangString vim_readme_file ${LANG_GREEK} "README.el.txt"
 
 ##############################################################################
 # MUI Configuration Strings                                               {{{1