Bug 145491 [deployment]BIRT_VIEWER_LOCALE in web.xml doesn't work
Description: BIRT_VIEWER_LOCALE in web.xml doesn't work Steps to reproduce: 1. Deploy birt 2. Set ko_kr to BIRT_VIEWER_LOCALE inside web.xml file 3. Start application server and preview report. Expected result: The default locale for report should be ko_kr Actual result: The report still used en_us locale to display datetime data.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* URL parameter name that determines whether to overwrite the document or
	 * not.
	 */
	public static final String PARAM_OVERWRITE = "__overwrite"; 
	/**
	 * URL parameter name that gives the image ID to display.
	 */
	public static final String PARAM_IMAGEID = "__imageID"; 
	/**
	 * URL parameter name that gives the bookmark expression.
	 */
	public static final String PARAM_BOOKMARK = "__bookmark"; 
	/**
	 * URL parameter name that gives that image rtl option.
	 */
	public static final String PARAM_RTL = "__rtl"; 
	/**
	 * URL parameter name that gives the preview max rows option.
	 */
	public static final String PARAM_MAXROWS = "__maxrows"; 
	/**
	 * URL parameter name that gives the reportlet id.
	 */
	public static final String PARAM_REPORTLETID = "__reportletid"; 
	/**
	 * Custom request headers to identify the request is a normal HTTP request
	 * or a soap request by AJAX.
	 */
	public static final String HEADER_REQUEST_TYPE = "request-type"; 
	/**