Another checkpoint of initial cut at thread pool manager for thrift and related concurrency classes.

Added TimerManager -  I can't live without one after all.

Added Util - handy place for common time operations et al.

Initial test code


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@664722 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/concurrency/Mutex.h b/lib/cpp/src/concurrency/Mutex.h
index e8371ea..20d4c0b 100644
--- a/lib/cpp/src/concurrency/Mutex.h
+++ b/lib/cpp/src/concurrency/Mutex.h
@@ -3,6 +3,11 @@
 
 namespace facebook { namespace thrift { namespace concurrency { 
 
+/**  A simple mutex class
+
+     @author marc
+     @version $Id:$ */
+
 class Mutex {
 
  public: