[BEANUTILS-465] Made indexed list setters work again.

Thanks to Daniel Atallah for the patch.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/beanutils/trunk@1629975 13f79535-47bb-0310-9956-ffa450edef68
[BEANUTILS-465] Updated changes.xml.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/beanutils/trunk@1629976 13f79535-47bb-0310-9956-ffa450edef68