p2-third-party: clone, re-create p2 of other tool
database: contain dump file of database for each release
p2.mirror: some library has bad p2 (slow server, wrong manifest,...) like restlet
p2.maven: main p2 library of idempiere, almost collect from maven, build up by idempiere/org.idempiere.maven.to.p2
    binary.file/p2.maven/maven-p2-R20190118
        https://idempiere.atlassian.net/browse/IDEMPIERE-2003
        https://tracker.zkoss.org/browse/ZK-4198
p2.maven/org.idempiere.webservice.client-p2-R20190302
    bundles for development a webservice client