Document commit message syntax, job directives, etc.  Decorate as a cross-reference page to encourage reuse

Change-Id: I3f3b12cfd6cd3dd10a91b28a36f4e487fa25f464
diff --git a/VERSION b/VERSION
index d1666bf..ea41b64 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.12.5.1-dev2
+2.12.5.1-dev3