I've updated the orion plugin to the new API in 1151. There have been some other changes too:
- Got rid of 'include project classpath'. Using that is an ugly hack and no sane j2ee/web plugin should use something like this.
- Added option to allow looking up context stuff in user threads (-userThreads)
- Classpath stuff is a lot more intelligent when neither war/exploded dir are selected. The plugin will automatically ensure that all the output paths and jars of your web app and libraries are included correctly in the webapp without any copying of files around. The webroot is assumed to be two up from your specified web.xml.