calling maven2 files from ant

[EJ Ciramella]

Without some really hacky scripty goodness, is there a clever way to
call maven2 with an ant script?
 
I'm working on getting a maven 2 based project up and running under
cruisecontrol and I've taken advantage of lots of little ant benefits.
Some things simply don't work using maven 2 directly, but having ant
call into maven would make things much easier.