patch 8.0.0537: illegal memory access with :z and large count

Problem:    Illegal memory access with :z and large count.
Solution:   Check for number overflow, using long instead of int. (Dominique
            Pelle, closes #1612)
diff --git a/src/testdir/test_alot.vim b/src/testdir/test_alot.vim
index 56a3f8e..e961e99 100644
--- a/src/testdir/test_alot.vim
+++ b/src/testdir/test_alot.vim
@@ -8,10 +8,11 @@
 source test_cursor_func.vim
 source test_delete.vim
 source test_ex_undo.vim
+source test_ex_z.vim
 source test_execute_func.vim
 source test_expand.vim
-source test_expr.vim
 source test_expand_dllpath.vim
+source test_expr.vim
 source test_feedkeys.vim
 source test_file_perm.vim
 source test_fileformat.vim
@@ -30,9 +31,9 @@
 source test_jumps.vim
 source test_lambda.vim
 source test_lispwords.vim
+source test_mapping.vim
 source test_match.vim
 source test_menu.vim
-source test_mapping.vim
 source test_messages.vim
 source test_partial.vim
 source test_popup.vim