Changes in preparation for PCL 1.11 (#273) (#279)

* Deriving typedef from pcl type

* Explicit boost shared_ptr for function parameters

* Use boost::shared_ptr instead of PCL::Ptr

* Implementing boost-std compatibility

* Using the compatibility layer

pcl_ros/tools/pointcloud_to_pcd.cpp

@@ -83,7 +83,7 @@ class PointCloudToPCD
     ////////////////////////////////////////////////////////////////////////////////
     // Callback
     void
-      cloud_cb (const pcl::PCLPointCloud2::ConstPtr& cloud)
+      cloud_cb (const boost::shared_ptr<const pcl::PCLPointCloud2>& cloud)
     {
       if ((cloud->width * cloud->height) == 0)
         return;