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
catch ( NumberFormatException e2 )
				{
					value = null;
				}
			}
		}
		return value;
	}
	/**
	 * Convert String without specified locale to java.util.Date
	 * Try to format the given String for JRE default Locale,
	 * if it fails, try to format the String for Locale.US 
	 * @param source
	 *            the String to be convert
	 * @param locate
	 * 			  the locate of the string
	 * @return result Date
	 */
	private static Date toDate( String source ) throws BirtException
	{
		try
		{
			return toDateISO8601( source );
		}
		catch ( BirtException e )
		{
			try
			{
				
				return toDate( source, ULocale.getDefault( ) );