Make sure code compiles on Ubuntu 12.04 with boost 1.46

Work with permissions in boost::filesystem was introduced in boost 1.49
diff --git a/ccnx/ccnx-discovery.cpp b/ccnx/ccnx-discovery.cpp
index afb0307..e6c4e84 100644
--- a/ccnx/ccnx-discovery.cpp
+++ b/ccnx/ccnx-discovery.cpp
@@ -22,12 +22,12 @@
 TaggedFunction::GetRandomTag()
 {
   //boost::random::random_device rng;
-  boost::random::uniform_int_distribution<> dist(0, CHAR_SET.size() - 1);
+  //boost::random::uniform_int_distribution<> dist(0, CHAR_SET.size() - 1);
   ostringstream oss;
-  for (int i = 0; i < DEFAULT_TAG_SIZE; i++)
-  {
+  //for (int i = 0; i < DEFAULT_TAG_SIZE; i++)
+  //{
     //oss << CHAR_SET[dist(rng)];
-  }
+  //}
   return oss.str();
 }
 
diff --git a/ccnx/ccnx-discovery.h b/ccnx/ccnx-discovery.h
index 959167a..b03a937 100644
--- a/ccnx/ccnx-discovery.h
+++ b/ccnx/ccnx-discovery.h
@@ -28,8 +28,7 @@
 #include "scheduler.h"
 #include <boost/shared_ptr.hpp>
 #include <boost/function.hpp>
-#include <boost/random/random_device.hpp>
-#include <boost/random/uniform_int_distribution.hpp>
+#include <boost/random.hpp>
 #include <boost/thread/mutex.hpp>
 #include <boost/thread/locks.hpp>
 #include <list>