undo m2e changes to classpath
remove committed file within target/ folder org.jboss.tools.runtime.drools.detector.feature/target/sources-feature/feature.xml
switch to sources from 33x branch (called 1.4.0) instead of sources from 40x branch (also called 1.4.0)
comment out org.jboss.tools.runtime.drools.detector.feature.source from update site
comment out org.jboss.tools.runtime.drools.detector.feature.source from update site
make org.jboss.tools.runtime.drools.detector.feature depend on org.jboss.tools.runtime.core.feature org.jboss.tools.common.core.feature
remove files from target folder (should not be in repo)
explicitly state Bundle-ClassPath: . and depend on org.jboss.tools.common.core
add target to .gitignore