Bug 176681 Issue about creating context-parameter path in read-only path[0601]
Description: Issue about creating context-parameter path in read-only path Build number:2.2.0.v20070308 Steps to reproduce: 1. Deploy birt. 2. Set BIRT_VIEWER_DOCUMENT_FOLDER/BIRT_VIEWER_IMAGE_DIR/.. to a read-only path. 3. Preview report. Expected result: Because the path is read-only, folders should be created in ${java.io.tmpdir} Actual result: No folders are created in ${java.io.tmpdir} and reports cannot be previewed in frameset mode.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
return true;
			File docFolder = new File( workingFolder );
			if ( docFolder.isAbsolute( ) )
			{
				String absolutePath = docFile.getAbsolutePath( );
				String docFolderPath = docFolder.getAbsolutePath( );
				
				if ( isWindowsPlatform( ) )
				{
					absolutePath = absolutePath.toLowerCase( );
					docFolderPath = docFolderPath.toLowerCase( );
				}
				return absolutePath.startsWith( docFolderPath );
			}
			else
			{
				
				return false;
			}
		}
		return true;
	}
	/**
	 * Generate document name according to report name.
	 * 
	 * @param request
	 * @return document name.
	 */
	protected static String generateDocumentFromReport(
			HttpServletRequest request )