Bug 150347 Support binary stream as preview image.
See 144843. We need model to save binary strame as report preview image. Currently, preview image is an external image. Maybe need a type to distinguish preview image type.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/RenameInNameSpaceRecord.java
{
	private Module module = null;
	private DesignElement element = null;
	private String oldName = null;
	private String newName = null;
	private int nameSpaceID;
	/**
	 * Constructs the record for renaming element in name space.
	 *