patch 8.0.0178: command count test fails on MS-Windows

Problem:    test_command_count may fail when a previous test interferes, seen
            on MS-Windows.
Solution:   Run it separately.

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    178,
 /**/
     177,
 /**/