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
String stringValue = (String) evaValue;
			value = toIntegerValue( evaValue );
			if ( value == null )
			{
				try
				{
					
					value = Double.valueOf( stringValue );
				}
				catch ( NumberFormatException e1 )
				{
					try
					{
						
						value = new BigDecimal( stringValue );
					}
					catch ( NumberFormatException e2 )
					{
						try
						{
							
							value = toDate( stringValue );
						}
						catch ( BirtException e3 )
						{
							value = evaValue;
						}
					}
				}
			}