OSX: Kdelibs4ConfigMigrator needs to happen after App object is created.
Summary: Calling migrator before the application object was created caused qt platform not to load on OSX, resulting in segfault/abort. Test Plan: Verify no longer segfaults on OSX. @kfunk, I presume that the ConfigMigrator can run after the Application object is created? Reviewers: kfunk, #kdevelop Reviewed By: kfunk, #kdevelop Subscribers: kfunk, kdevelop-devel Projects: #kdevelop Differential Revision: https://phabricator.kde.org/D624