Bug 152828 Add the projectFolder property on module
When user doesn't set the resource folder path in designer, there should be a default working path for Birt to manage the report design and find the related resources. A new property should be added on Module: name: projectFolder type:URL This property only can be given from the open design method from session but should not be set after the module initialized. Concern about the backward compatiblity issue, a new method will be added. Open design with a config argument.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
Iterator itre = propNames.iterator( );
		while ( itre.hasNext( ) )
		{
			name = (String) itre.next( );
			value = PropertyValueValidationUtil.validateProperty( this, name,
					properties.get( name ) );
			root.setProperty( name, value );
		}
		isInitialized = true;
	}
	/**
	 * Returns the encoding of the design/library file. Currently, BIRT only
	 * support UnicodeUtil.SIGNATURE_UTF_8.
	 * 
	 * @return the encoding of the file
	 */
	public String getFileEncoding( )
	{
		return UnicodeUtil.SIGNATURE_UTF_8;
	}
	/**
	 * Gets symbolic name of this module if defined. This property is needed
	 * when search resources in fragments. Usually it should be the plug-in id
	 * of the host plug-in.
	 * 
	 * @return
	 */
	public String getSymbolicName( )
	{
		return this.getStringProperty( SYMBOLIC_NAME_PROP );