Patch for ResultSetMetaData.getColumnClassName(), ResultSet.getObject()

Hi,

This patch handles Types.{SMALLINT,DATE,TIME,BINARY,VARBINARY,ARRAY} properly in
ResultSetMetaData.getColumnClassName(intcol). The default return value has been improved slightly too. 

In the case of Types.{BINARY,VARBINARY} it should be a byte[] class name, but AFAIK no such thing exists therefore I
used"java.lang.Object" instead. 

Also I optimized just a couple of things in ResultSet.getObject: there's no need to create a new Boolean object every
timeand there's no need to use (short)getInt(...) since getShort(...) does the same thing :-) 

Thank you,
--Jase

--
Jason Davies

jason@netspade.com