Missing svn properties.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1609965 13f79535-47bb-0310-9956-ffa450edef68
Fixed a compilation problem with Java 1.6.

Simplified a method using complex generic type arguments.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1609966 13f79535-47bb-0310-9956-ffa450edef68