Added generics.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/beanutils/branches/java5@1532068 13f79535-47bb-0310-9956-ffa450edef68
Added generics.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/beanutils/branches/java5@1532070 13f79535-47bb-0310-9956-ffa450edef68