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/version.c b/src/version.c
index 962f5b8..983a425 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    428,
+/**/
     427,
 /**/
     426,