abcl-asdf: fix for maven-3.5.0
Various fixups in a hack 'n slash to get maven-3.5.0 working. From <https://maven.apache.org/docs/3.5.0/release-notes.html>: After Maven 3.3.9 was released, the Eclipse Aether project was retired and the code base was migrated to the Apache Maven project. The original goal for the 3.4.0 release was to replace Aether with the exact same code after migration to the Apache Maven project and then proceed with bug fixes to the resolver code as well as other areas of Maven. The migration of the code between the two foundations took longer than expected and as a result there were other changes committed to Maven core that were outside the scope of intent for 3.4.0. In order to refocus on the original intent for 3.4.0, the decision was taken to revert the Maven core history to the point of the 3.3.9 release and merge in the desired changes one at a time.
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