Add some missign Q_OBJECT macros

src/plugins/projectexplorer/copytaskhandler.h

@@ -39,6 +39,8 @@ namespace Internal {
 
 class PROJECTEXPLORER_EXPORT CopyTaskHandler : public ITaskHandler
 {
+    Q_OBJECT
+
 public:
     CopyTaskHandler();
 

src/plugins/projectexplorer/showineditortaskhandler.h

@@ -39,6 +39,8 @@ namespace Internal {
 
 class PROJECTEXPLORER_EXPORT ShowInEditorTaskHandler : public ITaskHandler
 {
+    Q_OBJECT
+
 public:
     ShowInEditorTaskHandler();
 

src/plugins/projectexplorer/showoutputtaskhandler.h

@@ -41,6 +41,8 @@ class CompileOutputWindow;
 
 class PROJECTEXPLORER_EXPORT ShowOutputTaskHandler : public ITaskHandler
 {
+    Q_OBJECT
+
 public:
     ShowOutputTaskHandler(CompileOutputWindow *);
 

src/plugins/projectexplorer/vcsannotatetaskhandler.h

@@ -46,6 +46,8 @@ namespace Internal {
 
 class PROJECTEXPLORER_EXPORT VcsAnnotateTaskHandler : public ITaskHandler
 {
+    Q_OBJECT
+
 public:
     VcsAnnotateTaskHandler();