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/coreimpl.h

@@ -50,6 +50,11 @@ public:
     bool showOptionsDialog(const QString &group = QString(),
                            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);
 
     ActionManager *actionManager() const;
     FileManager *fileManager() const ;