patch 8.0.0430: options test fails or hangs on MS-Windows

Problem:    Options test fails or hangs on MS-Windows.
Solution:   Run it separately instead of part of test_alot.  Use "-S" instead
            of "-u" to run the script.  Fix failures.
diff --git a/src/testdir/Make_dos.mak b/src/testdir/Make_dos.mak
index 406d56a..0e7b461 100644
--- a/src/testdir/Make_dos.mak
+++ b/src/testdir/Make_dos.mak
@@ -130,4 +130,4 @@
 	@del vimcmd
 
 opt_test.vim: ../option.c gen_opt_test.vim
-	$(VIMPROG) -u gen_opt_test.vim --noplugin --not-a-term ../option.c
+	$(VIMPROG) -u NONE -S gen_opt_test.vim --noplugin --not-a-term ../option.c