Bug 152443 Support boolean type in data set
Support boolean type in data set. It'll cause some data transform issue with absence of boolean type.
core/org.eclipse.birt.core/src/org/eclipse/birt/core/data/DataTypeUtil.java
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 = DEFAULT_DATE_STYLE; i <= DateFormat.SHORT; i++ )
		{
			for ( int j = DEFAULT_DATE_STYLE; j <= DateFormat.SHORT; j++ )
			{
				dateFormat = DateFormatFactory.getDateTimeInstance( i, j, locale );
				try
				{
					resultDate = dateFormat.parse( source );
					return resultDate;
				}
				catch ( ParseException e1 )
				{
				}
			}
			 
			if ( !existTime )
			{
				dateFormat = DateFormatFactory.getDateInstance( i, locale );
				try
				{
					resultDate = dateFormat.parse( source );
					return resultDate;
				}
				catch ( ParseException e1 )