The special methods of INIConfiguration now use the configuration's Synchronizer.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1482083 13f79535-47bb-0310-9956-ffa450edef68
Made SynchronizerTestImpl public, so that it can be used for test classes in other packages, too.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1482084 13f79535-47bb-0310-9956-ffa450edef68