Bug 73027 [Dialogs] Buttons are too high
I20040831 Buttons are no longer oval but have a rounded rectangle shape (see first screenshot). The second screenshot shows how buttons using the small system font should look like.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/Dialog.java
* 
     * @param parent
     *            the parent composite to contain the button bar
     * @return the button bar control
     */
    protected Control createButtonBar(Composite parent) {
        Composite composite = new Composite(parent, SWT.NONE);
        
        
        GridLayout layout = new GridLayout();
        layout.numColumns = 0; 
        layout.makeColumnsEqualWidth = true;
        layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
        layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
        layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
        layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
        composite.setLayout(layout);
        GridData data = new GridData(GridData.HORIZONTAL_ALIGN_END
                | GridData.VERTICAL_ALIGN_CENTER);
        composite.setLayoutData(data);
        composite.setFont(parent.getFont());
        
        createButtonsForButtonBar(composite);
        return composite;
    }
    /**
     * Adds buttons to this dialog's button bar.
     * <p>
     * The <code>Dialog</code> implementation of this framework method adds
     * standard ok and cancel buttons using the <code>createButton</code>