Bug 158947 the error of the datetime type conversion
Description: Now we input "Jan 13, 2003 12:00 AM GMT0100" into the parameter as a default value. The time is not transformed base on the time zone "GMT0100". The time should be transformed. And the other form input e.g. "SUN Jan 13, 2003 12:00 AM GMT0100" should be identified correctly. Step to reproduce: 1. new a report and create a report parameter 2. choose the date type "DateTime" 3. input value "SUN Jan 13, 2003 12:00 AM GMT0100" as default value,ok to finish 4. error message appear 5. input value "SUN Jan 13, 2003 12:00 AM" and click ok Actuate result: the parameter value is still "01/13/2003 12:00:00 AM" Excepted result: the datetime value should be transformed base on the time zone.
core/org.eclipse.birt.core/src/org/eclipse/birt/core/data/DataTypeUtil.java
throws BirtException
	{
		return toDate( source, ULocale.forLocale( locale ) );
	}
	/**
	 * convert String with the specified locale to java.util.Date
	 * 
	 * @param source
	 *            the String to be convert
	 * @param locate
	 * 			  the locate of the string
	 * @return result Date
	 */
	public static Date toDate( String source, ULocale locale )
			throws BirtException
	{
		if ( source == null )
			return null;
		DateFormat dateFormat = null;
		Date resultDate = null;
		
		boolean existTime = source.matches( ".*[0-9]+:[0-9]+:[0-9]+.*" )
				|| source.matches( ".*[0-9]+:[0-9]+.*" );
		for ( int i = DateFormatUtil.DEFAULT_DATE_STYLE; i <= DateFormat.SHORT; i++ )
		{
			for ( int j = DateFormatUtil.DEFAULT_DATE_STYLE; j <= DateFormat.SHORT; j++ )
			{
				dateFormat = DateFormatHolder.getDateTimeInstance( i, j, locale );
				try
				{