Separate active run config setting in project mode.

And add a sort of isEnabled functionality for run configs.
This doesn't do much yet though, and is not updated correctly either.

src/plugins/qt4projectmanager/qt4runconfiguration.cpp

@@ -91,6 +91,17 @@ QString Qt4RunConfiguration::type() const
     return "Qt4ProjectManager.Qt4RunConfiguration";
 }
 
+bool Qt4RunConfiguration::isEnabled() const
+{
+#ifdef QTCREATOR_WITH_S60
+    Qt4Project *pro = qobject_cast<Qt4Project*>(project());
+    QTC_ASSERT(pro, return false);
+    ProjectExplorer::ToolChain::ToolChainType type = pro->toolChainType(pro->activeBuildConfiguration());
+    return type != ProjectExplorer::ToolChain::WINSCW && type != ProjectExplorer::ToolChain::GCCE;
+#else
+    return true;
+#endif
+}
 
 //////
 /// Qt4RunConfigurationWidget