Analyzer: Move supportsReRunning() down to individual runControls

This maintains current behavior by letting all subclasses return 'false'.
This might be too pessimistic, but can be fixed on a per-tool base

Change-Id: I71ac1b1e2cc98cfb1c5b76bc7c60a3240c5d1dcd
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

src/plugins/valgrind/valgrindengine.h

@@ -48,6 +48,7 @@ public:
     void start() override;
     StopResult stop() override;
     bool isRunning() const override;
+    bool supportsReRunning() const override { return false; }
 
     QString executable() const;