Bug 197228 Need updaet createdBy info when serialize the module
When open module, designer will pass the property map which contains the createdBy info. this info should be retained by moduleHandle and then be updated and written when doing serialization. Note if this info is null, model should not update it during serialization. This could happen for api users or third-party designer. For BIRT designer, it will guarantee this value always not null.
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/parser/ReportDesignParseTest.java
/**
	 * Tests open a design file will reading the line number.
	 * 
	 * @throws DesignFileException
	 * 
	 * @throws Exception
	 */
	public void testParseReadingLineNumber( ) throws DesignFileException
	{
		openDesign( "LineNumberParseTest.xml" ); 
		TableHandle table = (TableHandle) designHandle.findElement( "table1" );
		assertEquals( 373, designHandle.getLineNo( table ) );
		CellHandle cell = (CellHandle) designHandle.getElementByID( 45 );
		assertEquals( 395, designHandle.getLineNo( cell ) );
		ExtendedItemHandle chart = (ExtendedItemHandle) designHandle
				.getElementByID( 34023 );
		assertEquals( 400, designHandle.getLineNo( chart ) );
		
		EmbeddedImageHandle image = (EmbeddedImageHandle) designHandle
				.getAllImages( ).get( 0 );
		assertEquals( 407, designHandle.getLineNo( image ) );
		
		LibraryHandle library = (LibraryHandle) designHandle.getLibraries( )
				.get( 0 );
		assertEquals( 8, designHandle.getLineNo( library ) );
		
		ThemeHandle theme = designHandle.getTheme( );
		assertEquals( 6, designHandle.getLineNo( theme ) );
	}
}