Bug 131835 Clean up FO related code
Now that FO is not part of BIRT, clean up all references to FO, including the FORenderOption, TailoredForFOP, etc.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/ReportRunner.java
protected String targetFile = null;
	/**
	 * execution mode, one of the Run, RunAndRender and Render. the default mode
	 * is RunAndRender
	 */
	protected String mode = "RunAndRender"; 
	/**
	 * the output locale, used in Run and RunAndRender modes.
	 */
	protected String locale = "en"; 
	/**
	 * the output format, used in Render and RunAndRender.
	 */
	protected String format = "html"; 
	/**
	 * used to decorate the HTML output, used in Render and RunAndRender mode.
	 */
	protected String htmlType = "HTML"; 
	/**
	 * the output encoding, used in html format in Render and RunAndRender
	 * modes.
	 */
	protected String encoding = "utf-8"; 
	/**
	 * paramters used to execute the report, used in Run and RunAndRender modes.
	 */
	protected HashMap params = new HashMap( ); 
	/**
	 * output page number, used in Render mode.
	 */