Hi georg,
Are you trying to share with the community some jbpm3 improvements?
What are those improvements doing? You cannot just upload the binaries and share that. You usually create a jira issue in jira.jboss.org that describe the problems and the improvements and attach a patch to solve them. Then one of the people responsible to maintain jbpm3 will review your patch and I everything is ok, he will merge that with the latest source code.
Cheers