Debugger: Rework display length limitation systems

There are two values now, one to limit an entry in the L&E view
(default 100) and a hard upper limit (at 1 mio).

If displayed values are elided, the true length is shown in addition.

Change-Id: I180b70446c18e258c164e5af75b88d4c8b6c53f2
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/debugger/watchhandler.cpp

@@ -695,6 +695,14 @@ QString WatchModel::formattedValue(const WatchData &data) const
         }
     }
 
+    if (data.elided) {
+        QString v = value;
+        v.chop(1);
+        QString len = data.elided > 0 ? QString::number(data.elided)
+                                      : QLatin1String("unknown length");
+        return v + QLatin1String("\"... (") + len  + QLatin1Char(')');
+    }
+
     return translate(value);
 }