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
* 
	 * @param moduleHandle
	 *            the handle module
	 * @param libraryHandle
	 *            the library to include.
	 * @return true if it included successfully, or false if the operation
	 *         failed.
	 */
	public static boolean includeLibrary( ModuleHandle moduleHandle,
			LibraryHandle libraryHandle ) throws DesignFileException,
			SemanticException
	{
		if ( moduleHandle != libraryHandle
				&& !moduleHandle.isInclude( libraryHandle ) )
		{
			return includeLibrary( moduleHandle, libraryHandle.getFileName( ) );
		}
		return true;
	}
	/**
	 * Includes the library into within the current module.
	 * 
	 * @param libraryHandle
	 *            the library to include.
	 * @return true if it included successfully, or false if the operation
	 *         failed.
	 */
	public static boolean includeLibrary( LibraryHandle libraryHandle )
			throws DesignFileException, SemanticException
	{