Fix test task in makefile

Task chaining in leiningen is now done with the "do" task

Signed-off-by: Daniel Borchmann <daniel.borchmann@mailbox.tu-dresden.de>
Using Clojure 1.5.1

Renaming «reduced?» to «context-reduced?» to avoid name collision
with new Clojure function «reduced?».  For consistency, «clarified?»
has been renamed to «context-clarified?».

Signed-off-by: Daniel Borchmann <daniel.borchmann@mailbox.tu-dresden.de>