JBTIS-328 - Add org.eclipse.birt feature group and update Luna (SR1) and...

... JBDS core deps (CR1)

1. Pick up the org.eclipse.birt.feature.group for use in Teiid
2. Update to Luna SR1
http://download.jboss.org/jbosstools/updates/requirements/luna/201409180900-SR1
3. Update JBoss Tools core target dependencies to CR1
http://download.jboss.org/jbosstools/static/releases/jbosstools-4.2.0.CR1-updatesite-core/
http://download.jboss.org/jbosstools/static/releases/jbosstools-4.2.0.CR1-updatesite-coretests/
4. Update orbit requirements to 2014
http://download.jboss.org/jbosstools/updates/requirements/orbit/R20140525021250