upped dependencies and version

clojure -> 1.5.1
clj-cas -> 1.0.1-SNAPSHOT
clojure-commons -> 1.4.1-SNAPSHOT
lein-iplant-rpm -> 1.4.1-SNAPSHOT
Merge branch '1.8' of https://github.com/iPlantCollaborativeOpenSource/Donkey into 1.8

Conflicts:
	project.clj