[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release dnet-index-solr-service-2.4.7
reintegrated branch solr75 -r53828:HEAD
depending on snapshot parent
[maven-release-plugin] prepare release dnet-index-solr-service-2.4.3
depending on released parent
migrated to dnet45
codebase used to migrate to java8 the production system