patch 8.2.0687: some tests do not work on FreeBSD

Problem:    Some tests do not work on FreeBSD.
Solution:   Enable modeline.  Use WaitFor() in more cases. (Ozaki Kiichi,
            closes #6036)
diff --git a/src/version.c b/src/version.c
index d35cbab..74fabce 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    687,
+/**/
     686,
 /**/
     685,