Update git submodules

* Update ChronoSync from branch 'master'
  to fae9def3594dd9e7bda72f71bd29e7cb1a87cb5e
  - build: various updates
    
     * Upgrade waf to 2.0.14
     * Sync default compiler flags with ndn-cxx
     * Simplify compilation of unit-tests
    
    Change-Id: I94865d405240c181dd4cfdd1cb730b756ad5166a
    
diff --git a/ChronoSync b/ChronoSync
index 9a306fe..fae9def 160000
--- a/ChronoSync
+++ b/ChronoSync
@@ -1 +1 @@
-Subproject commit 9a306fe0a99824b26028db5d04f6c4db5d258b33
+Subproject commit fae9def3594dd9e7bda72f71bd29e7cb1a87cb5e