Bug 214204 Only document content in document folder should be removed.[0601]
Description: Only document related content in document folder should be removed. Build number:2.3.0.v20080103 Steps to reproduce: 1. Deploy BIRT. 2. Edit web.xml to set BIRT_VIEWER_DOCUMENT_FOLDER to your local path and there are content inside the path. 3. Start server and click View Example to preview sample report. Expected result: Only content created by viewer should be removed in specified document folder. Actual result: All contents are deleted despite whether they are related with BIRT. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
path = convertSystemPath( DataUtil.trimString( path ) );
		String realPath = null;
		
		if ( isRelativePath( path ) )
		{
			realPath = getRealPath( path, context );
			makeDir( realPath );
			return DataUtil.trimSepEnd( path );
		}
		else
		{
			
			realPath = path;
		}
		
		makeDir( realPath );
		return DataUtil.trimSepEnd( realPath );
	}
	/**
	 * Process folder settings with absolute path. If path is a relative path,
	 * first relative to context. If set canWrite to true, then check the folder
	 * if writable.If not, relative to ${java.io.tmpdir} folder.
	 * 
	 * @param context
	 * @param path
	 * @param defaultPath
	 * @param canWrite
	 * @return
	 */
	public static String processRealPath( ServletContext context, String path,