Update git submodules

* Update ChronoSync from branch 'master'
  to c47774fd954907a194239b448101acfa75ffdc09
  - build: pass pkg_config_path to check_cfg() when looking for libndn-cxx
    
    Instead of modifying os.environ.
    
    This commit also updates some waf tools and fixes the value of
    includedir in the generated .pc file.
    
    Refs: #5042
    Change-Id: Idf0481f36664cc085571265747a004655001c0ed
    
diff --git a/ChronoSync b/ChronoSync
index a1ad604..c47774f 160000
--- a/ChronoSync
+++ b/ChronoSync
@@ -1 +1 @@
-Subproject commit a1ad6046723a9b7bad4760f7fae8bb9139c678cb
+Subproject commit c47774fd954907a194239b448101acfa75ffdc09