HSEARCH-1663 Packages not exported from osgi bundles

https://hibernate.atlassian.net/browse/HSEARCH-1663
You are adding impl packages. How comes you need them? If you do, something seems fishy imo. I tried to avoid exporting impl packages intentionally in the OSGi metadata. A single case might be arguable, but these are a lot of impl classes. What exactly is the problem here? Why are they needed?