Remove 'Analyze' mode.

- Introduce a shared analysis output pane using a stacked widgets,
  layouts for the tools' output panes and toolbar widgets.
- Introduce IAnalyzerOutputPaneAdapter interface returned
  by IAnalyzerTool to manage them.
- Remove mode and its mainwindow contents (depending on enum
  constants should use cases for it occur).

Reviewed-by: con

src/plugins/memcheck/memcheckplugin.cpp

@@ -63,7 +63,6 @@ bool MemcheckPlugin::initialize(const QStringList &/*arguments*/, QString */*err
     AnalyzerGlobalSettings::instance()->registerSubConfigFactory(new MemcheckConfigFactory);
 
     AnalyzerManager::instance()->addTool(new MemcheckTool(this));
-
     return true;
 }