Support the defaultFetchSize in config.xml

[kazuki43zoo]

In currently implementation, fetchSize need specifying per query(<select> tag). But i want to specify the default fetchSize at one place.

e.g.)

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
    PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>
  <settings>
    <setting name="defaultFetchSize" value="100"/>
  </settings>
</configuration>

[kazuki43zoo]

Thank you for merging into master and 3.2.x !!