Bug 151361 default value for reousrce folder user preference
When user does not sepecify the resourec foler user preference, can we make the current project folder (in IDE) or the current report design file's folder (in RCP) as the default value for the resource folder. This way, by default the current project folder is the resource folder where user can create their libs and images. Also please set the default user preference to be null when BIRT is freshly installed.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/UIUtil.java
* Includes the library into within the given module.
	 * 
	 * @param moduleHandle
	 *            the handle module
	 * @param libraryPath
	 *            the full path of the library
	 * @return true if it included successfully, or false if the operation
	 *         failed.
	 */
	public static boolean includeLibrary( ModuleHandle moduleHandle,
			String libraryPath ) throws DesignFileException, SemanticException
	{
		String namespace = getLibraryNamespace( moduleHandle, libraryPath );
		if ( namespace != null )
		{
			moduleHandle.includeLibrary( DEUtil.getRelativedPath( ReportPlugin.getDefault( )
					.getResourcePreference( ),
					libraryPath ),
					namespace );
			
			
			
			
			
			return true;
		}
		return false;
	}
	/**
	 * Includes the library into within the given module.