Maven32

This pull request adds explicit support for Maven 3.2 and its API - this is required to be able to perform multi threaded builds from Jenkins with Maven 3.2 - see https://issues.jenkins-ci.org/browse/JENKINS-22486.

I've simply copied the M31 artefacts and used 3.2 instead of 3.1 where applicable. Please let me know if this isn't the right approach.