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/debugger/debuggerdialogs.h

@@ -62,14 +62,6 @@ struct ProcData
     QString state;
 };
 
-// Display a warning with an additional button to open
-// the debugger settings dialog if settingsId is nonempty.
-int warningWithSettings(const QString &title,
-                        const QString &text,
-                        const QString &details = QString(),
-                        const QString &settingsId = QString(),
-                        QWidget *parent = 0);
-
 class AttachCoreDialog : public QDialog
 {
     Q_OBJECT