Bug 175803 format date time examples are incorrect
1. put a data field on report 2. select "format date time" in "properties" 3. select "custom" 4. in the examples in the "example formats" table are not correct if you use non english date/time settings in your microsoft windows preferences; e.g. "Short Date" is shown as "28.02.07" with "example code" "M/dd/yyyy", the correct value had to be "dd.MM.yyyy"
UI/org.eclipse.birt.report.designer.ui.views/src/org/eclipse/birt/report/designer/internal/ui/views/attributes/widget/FormatDateTimeDescriptor.java
* @return Returns the previewText.
	 */
	private String getPreviewText( )
	{
		return previewText;
	}
	/**
	 * Sets the pattern string for this preference.
	 * 
	 * @param pattern
	 *            The pattern to set.
	 */
	private void setPattern( String pattern )
	{
		this.pattern = pattern;
	}
	/**
	 * @param datetiem_format_type_general_date
	 */
	private void setCategory( String category )
	{
		this.category = category;
	}
	/**
	 * Marks the dirty marker of the page.
	 * 
	 * @param dirty
	 */
	private void markDirty( boolean dirty )
	{