http://issues.apache.org/jira/browse/LUCENE-721 -- Added in Clover code coverage, thanks to Michael Busch. Updated the xdocs with a new file named systemrequirements that details the system requirements for using Lucene. Linked to them via the developer-resources and the releases page. Regenerated the site.
lucene/java/trunk/docs/systemrequirements.html
lucene/java/trunk/docs/systemrequirements.pdf