Use log4j 2.0-beta8 since beta6 does not exist any more.
Use spoofax-libs.jar instead of separate libraries.
Emit all messages (including errors) on STDOUT (ensures they are in order).
Merge commit '38981ab2'. Pulls in classpath & dependencies changes that were only pushed to the binaries branch but are required everywhere
Manually apply changes from efc745fd98b4cbaf4790e9e22f59ff5604d38264