ios: fix update of executable path in the UI

We now update after the profile has parsed, not when it is changed.

Change-Id: I70bf9bed85c77677d0ece0d7b99dff590a9e4d47
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

src/plugins/ios/iosrunconfiguration.h

@@ -88,6 +88,8 @@ protected:
 private slots:
     void proFileUpdated(QmakeProjectManager::QmakeProFileNode *pro, bool success, bool parseInProgress);
     void deviceChanges();
+signals:
+    void localExecutableChanged();
 private:
     void init();
     void enabledCheck();