As far as I can tell, the jbossbuild.xml files are not being used anymore. For example (https://svn.jboss.org/repos/jbossas/trunk/server/jbossbuild.xml).If no one has any objections, I'd like to remove these from trunk.
I added a jira issue here: http://jira.jboss.com/jira/browse/JBBUILD-452
Yes, remove them.
