patch 8.2.3679: objc file detected as Octave

Problem:    objc file detected as Octave. (Antony Lee)
Solution:   Detect objc by preprocessor lines. (Doug Kearns, closes #9223,
            closes #9220)
diff --git a/src/version.c b/src/version.c
index b7a93ed..ca0f16f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3679,
+/**/
     3678,
 /**/
     3677,