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/src/org/eclipse/birt/report/model/core/Module.java
BigDecimal id = propBinding.getID( );
			if ( id != null && getElementByID( id.longValue( ) ) == element )
				result.add( propBinding );
		}
		return result;
	}
	/**
	 * Checks the name of the embedded image in this report. If duplicate, get a
	 * unique name and rename it.
	 * 
	 * @param image
	 *            the embedded image whose name is need to check
	 */
	public void rename( EmbeddedImage image )
	{
		if ( image == null )
			return;
		if ( StringUtil.isBlank( image.getName( ) ) )
			return;
		List images = getListProperty( this, IMAGES_PROP );
		if ( images == null )
			return;
		
		List names = new ArrayList( );
		for ( int i = 0; i < images.size( ); i++ )
		{
			EmbeddedImage theImage = (EmbeddedImage) images.get( i );
			String name = theImage.getName( );
			assert !names.contains( name );
			names.add( name );