scala/scala — pull request #3477 by densh (2014-02-06 15:16:37+00:00)
Title: Rename EmptyTypTree into SyntacticEmptyTypeTree

1. Change the name as @xeno-by believes that previous name was misleading
2. Remove EmptyTree case as it's not needed any longer, only TypeTrees are used now

review @xeno-by
/cc @vladimirnik