S2.1.13 S2Dao1.0.20 realease

changes

org.seasar.extension.jdbc

• added UpdateHandler.execute(Object args, Class argTypes), to handle null correctly
• added CallableStatementFactory, replace j2ee.dicon

org.seasar.extension.jdbc.impl

• added BooleanToIntCallableStatementFactory, to handle boolean to int see http://homepage3.nifty.com/seasar/s2jdbc.html#BooleanToInt

org.seasar.extension.jdbc.types

• fiexed *Type.bindValue(), to handle null correctly

org.seasar.dao.impl

• fiexed to be able to correspond to also PostgrefSQL8, it tried to process null with accurate type.
• fixed Defectiveness of type check of the argument with the succession of Dao