Introduce rtengine/noncopyable.hpp

rtgui/thumbimageupdater.cc

@@ -30,8 +30,8 @@
 #define DEBUG(format,args...)
 //#define DEBUG(format,args...) printf("ThumbImageUpdate::%s: " format "\n", __FUNCTION__, ## args)
 
-class
-    ThumbImageUpdater::Impl
+class ThumbImageUpdater::Impl :
+    public rtengine::NonCopyable
 {
 public:
 
@@ -78,8 +78,6 @@ public:
         threadPool_ = new Glib::ThreadPool(threadCount, 0);
     }
 
-    Impl(const Impl&) = delete;
-
     Glib::ThreadPool* threadPool_;
 
     // Need to be a Glib::Threads::Mutex because used in a Glib::Threads::Cond object...