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/core/Module.java
* opening the outer-most module.
	 */
	protected Exception fatalException;
	/**
	 * The registered name manager of this module.
	 */
	protected INameManager nameManager = null;
	/**
	 * The registered API backward compatibility manager of this module.
	 */
	protected VersionControlMgr versionMgr = null;
	/**
	 * Options set for this module.
	 */
	protected ModuleOption options = null;
	/**
	 * Default constructor.
	 * 
	 * @param theSession
	 *            the session of the report
	 */
	protected Module( DesignSession theSession )
	{
		session = theSession;
		for ( int i = 0; i < NAME_SPACE_COUNT; i++ )
		{
			nameSpaces[i] = new NameSpace( );
			moduleNameSpaces[i] = ModuleNameScopeFactory
					.createElementNameSpace( this, i );
		}