patch 8.1.1241: Ex command info contains confusing information

Problem:    Ex command info contains confusing information.
Solution:   When using the NOTADR flag use ADDR_OTHER for the address type.
            Cleanup code using NOTADR.  Check for errors in
            create_cmdidxs.vim.  Adjust Makefile to see the errors.
diff --git a/src/Makefile b/src/Makefile
index 19b59c2..65e7981 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1987,7 +1987,7 @@
 # If this fails because you don't have Vim yet, first build and install Vim
 # without changes.
 cmdidxs: ex_cmds.h
-	vim -u NONE -i NONE -X -S create_cmdidxs.vim
+	vim --clean -X -u create_cmdidxs.vim
 
 
 # The normal command to compile a .c file to its .o file.