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
{
	private static final String MSG_DIALOG_TITLE = Messages.getString( "ImportLibraryAction.Title.ImportSuccessfully" ); 
	private static final String MSG_DIALOG_MSG = Messages.getString( "ImportLibraryAction.Message.ImportSuccessfully" ); 
	/**
	 * Regex pattern for neutral chars in Bidi Algorithm.
	 */
	static Pattern punctuation = Pattern.compile( "\\p{Punct}||\\p{Blank}||\\p{Space}" ); 
	public static Object listArea;
	/**
	 * Returns the length in pixels of given string in a control.
	 * 
	 * @return the length in pixels
	 */
	public static int getStringWidth( String string, Control control )
	{
		int width = 0;
		GC gc = new GC( control );
		for ( int i = 0; i < string.length( ); i++ )
		{
			char c = string.charAt( i );
			width += gc.getAdvanceWidth( c );
		}
		gc.dispose( );
		return width;
	}
	/**