Bug 119331 Library - name space terminology and behavior
During BIRT 2.0 library feature review meeting the following change was decided. - Change the term namespace to 'prefix' - By default use the library name as the prefix ( namespace ); the dialog to input prefix should be prompted only if hte auto generated prefix is not unique.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/UIUtil.java
* Creates a blank label under the given parent.
	 * 
	 * @return the label created
	 */
	public static Label createBlankLabel( Composite parent )
	{
		Label label = new Label( parent, SWT.NONE );
		label.setVisible( false );
		return label;
	}
	/**
	 * Includes the library into within the given module.
	 * 
	 * @param moduleHandle
	 *            the handle module
	 * @param libraryHandle
	 *            the library to include.
	 * @return true if it included successfully, or false if the operation
	 *         failed.
	 */
	public static boolean includeLibrary( ModuleHandle moduleHandle,
			LibraryHandle libraryHandle ) throws DesignFileException,
			SemanticException
	{
		if ( !moduleHandle.isInclude( libraryHandle ) )
		{
			String defaultName = new File( libraryHandle.getFileName( ) ).getName( )
					.split( File.separator + "." )[0];
			ImportLibraryDialog dialog = new ImportLibraryDialog( defaultName );
			if ( dialog.open( ) == Dialog.OK )