Also use the dumper library code from the cmake plugin.

Adds a little bit of code duplication, don't currently know how to best
avoid it, so I'll leave that for now as is. To be tested once Andre
pushes his stuff.

src/plugins/cmakeprojectmanager/cmakerunconfiguration.cpp

@@ -125,7 +125,7 @@ QWidget *CMakeRunConfiguration::configurationWidget()
 
 QString CMakeRunConfiguration::dumperLibrary() const
 {
-    return QString();
+    return CMakeManager::findDumperLibrary(environment());
 }
 
 // Factory