Bug 179898 Date/Time type X-Axis labels are not correct when set grouping [0001]
Description: Date/Time type X-Axis labels are not correct when set grouping. Build number: 2.2.0.v20070328-0630 Steps to reproduce: 1. New a Bar Chart with Date/Time type X-Axis with values as 4/1/2005 10:12 AM 4/1/2005 11:15 AM 4/1/2005 7:15 AM 2. Enable X Series Grouping, set Type as "DateTime", Unit as "Day", Interval as 1, and Aggregate Expression as "Sum". 3. Preview. Expected result: X-Axis label should be "4/1/2005" Actual result: X-Axis label is "2005" Error log: N/A
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/util/CDateTime.java
* 
	 * @param d
	 *            A previously defined Date instance
	 */
	public CDateTime( Date d )
	{
		super( );
		setTime( d );
	}
	/**
	 * A constructor that creates an instance from a given <code>Calendar</code>
	 * value
	 * 
	 * @param c
	 *            A previously defined Calendar instance
	 */
	public CDateTime( Calendar c )
	{
		super( );
		setTime( c.getTime( ) );
	}
	/**
	 * A constructor that creates an instance from a given <code>long</code>
	 * value
	 * 
	 * @param lTimeInMillis
	 *            The time defined in milliseconds
	 */
	public CDateTime( long lTimeInMillis )
	{