patch 8.0.0428: git and hg see new files after running tests

Problem:    Git and hg see new files after running tests. (Manuel Ortega)
Solution:   Add the generated file to .hgignore (or .gitignore). Delete the
            resulting verbose file. (Christian Brabandt)  Improve dependency
            on opt_test.vim.  Reset the 'more' option.
diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
index b7fb15c..17c6028 100644
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -221,3 +221,4 @@
 
 test60.out: test60.vim
 
+test_options.res: opt_test.vim