Fixed build to use freely-available JARs

Updated the build to use freely-available JAR files for JMS 1.1 and
EJB 2.1, as the original JAR files do not exist in Maven Central and
are no longer in the Spring Release repository.

Issue: SWS-644
Merge pull request #4 from beamerblvd/SWS-644

* SWS-644:
  Fixed build to use freely-available JARs