debugger: display "sub-breakpoints"

<MULTIPLE> happens in constructors, inline functions, and
at other places like 'foreach' lines.

Change-Id: Ifb89b659d279f257ba8295b80a35d605820ec54b
Reviewed-on: http://codereview.qt.nokia.com/498
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/debugger/breakwindow.cpp

@@ -524,6 +524,7 @@ void BreakWindow::setModel(QAbstractItemModel *model)
     resizeColumnToContents(0); // Number
     resizeColumnToContents(3); // Line
     resizeColumnToContents(6); // Ignore count
+    connect(model, SIGNAL(layoutChanged()), this, SLOT(expandAll()));
 }
 
 void BreakWindow::contextMenuEvent(QContextMenuEvent *ev)