patch 8.0.1357: startup test fails on OpenBSD

Problem:    Startup test fails on OpenBSD. (Edd Barrett)
Solution:   Check for "BSD" instead of "FreeBSD" being defined. (James McCoy,
            closes #2376, closes #2378)
diff --git a/src/version.c b/src/version.c
index 50e3f16..6fb11e9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1357,
+/**/
     1356,
 /**/
     1355,