THRIFT-270: change cpp namespaces from facebook::thrift to apache::thrift

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@739644 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/concurrency/Monitor.cpp b/lib/cpp/src/concurrency/Monitor.cpp
index 932ae68..81855dc 100644
--- a/lib/cpp/src/concurrency/Monitor.cpp
+++ b/lib/cpp/src/concurrency/Monitor.cpp
@@ -15,7 +15,7 @@
 
 #include <pthread.h>
 
-namespace facebook { namespace thrift { namespace concurrency {
+namespace apache { namespace thrift { namespace concurrency {
 
 /**
  * Monitor implementation using the POSIX pthread library
@@ -122,4 +122,4 @@
 
 void Monitor::notifyAll() const { impl_->notifyAll(); }
 
-}}} // facebook::thrift::concurrency
+}}} // apache::thrift::concurrency