Bug 166931 Include double quotation in title of viewer tag will cause blank page.[0603]
Description: Include double quotation in title of viewer tag will cause blank page. Build number: 2.2.0.v20061206 Steps to reproduce: 1. New a BIRT Web project. 2. New a jsp file based on birt template, input below content in body: <birt:viewer id="0" name="first sample" title="first &quot; report &quot; title" reportDesign="birt_tag_sample.rptdesign" > </birt:viewer> 3. Run the project to see the jsp file. Expected result: Report displays with title first"report" title. Actual result: Blank page with nothing showed. Error log:N/A
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* If a report file name is a relative path, it is relative to document
	 * folder. So if a report file path is relative path, it's absolute path is
	 * synthesized by appending file path to the document folder path.
	 * 
	 * @param file
	 * @return
	 */
	protected static String createAbsolutePath( String filePath )
	{
		if ( filePath != null && filePath.trim( ).length( ) > 0
				&& isRelativePath( filePath ) )
		{
			return documentFolder + File.separator + filePath;
		}
		return filePath;
	}
	/**
	 * If set isDocumentFolderAccessOnly as true, check the file if exist in
	 * document folder.
	 * 
	 * @param filePath
	 * @return boolean
	 */
	public static boolean isValidFilePath( String filePath )
	{
		assert filePath != null;
		if ( isDocumentFolderAccessOnly )
		{
			String absolutePath = new File( filePath ).getAbsolutePath( );
			String docFolderPath = new File( documentFolder ).getAbsolutePath( );