Debugger: Do configuration error checking early on.

Add a configuration checking method to the Debugger manager,
depending on toolchain, wire it to the engines.
Check that in the debugger run controls.

Add a convenience method to ICore that shows a warning
message with a "Settings" button, pointing the user
to a configuration error on a settings page.

Remove leftovers of the dumper parser.
Acked-by: con <qtc-committer@nokia.com>

src/plugins/coreplugin/mainwindow.h

@@ -138,6 +138,12 @@ public slots:
                            const QString &page = QString(),
                            QWidget *parent = 0);
 
+    bool showWarningWithOptions(const QString &title, const QString &text,
+                                const QString &details = QString(),
+                                const QString &settingsCategory = QString(),
+                                const QString &settingsId = QString(),
+                                QWidget *parent = 0);
+
 protected:
     virtual void changeEvent(QEvent *e);
     virtual void closeEvent(QCloseEvent *event);