Debugger: Add a way to copy selected values from Locals and Expressions

Task-number: QTCREATORBUG-14956
Change-Id: I2700820adf716afb784ec686297c15c48f3592f7
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/debugger/watchhandler.h

@@ -100,7 +100,7 @@ public:
     static int unprintableBase();
 
     QByteArray watcherName(const QByteArray &exp);
-    QString editorContents();
+    QString editorContents(const QModelIndexList &list = QModelIndexList());
 
     void scheduleResetLocation();
     void resetLocation();