Bug 121498 When datasource/dataset deleted, the datasource/dataset property binding element haven't been deleted
When deleted the datasource/dataset, the datasource/dataset property binding element haven't been deleted. Expected result: This operation must be a transaction.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
{
		fileName = newName;
	}
	/**
	 * Sets the UTF signature of this module file.
	 * 
	 * @param signature
	 *            the UTF signature of the module file.
	 */
	public void setUTFSignature( String signature )
	{
		this.signature = signature;
	}
	/**
	 * Gets the UTF signature of this module file.
	 * 
	 * @return the UTF signature of the module file.
	 */
	public String getUTFSignature( )
	{
		return signature;
	}
	/**
	 * Returns the number of slots of the module. For the library and the report
	 * design, this number is different.
	 * 
	 * @return the number of slots of the module
	 */
	protected abstract int getSlotCount( );
	/*