[Explicitly declare shared_ptr]
Summary:
just some simple styling changes. moving  using boost::shared_ptr to .cpp
  and using the full path name in .h
Reviewed by: boz, dreiss
Test Plan: compiled and tested on the adfinder


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665289 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/concurrency/Mutex.cpp b/lib/cpp/src/concurrency/Mutex.cpp
index 695d5dc..a055656 100644
--- a/lib/cpp/src/concurrency/Mutex.cpp
+++ b/lib/cpp/src/concurrency/Mutex.cpp
@@ -9,6 +9,8 @@
 #include <assert.h>
 #include <pthread.h>
 
+using boost::shared_ptr;
+
 namespace facebook { namespace thrift { namespace concurrency { 
 
 /**