lang/clojure: Update to 1.9.0.381

Move the port to install the new offical Clojure command line tools
instead of custom scripts.

Changes: https://github.com/clojure/clojure/blob/clojure-1.9.0/changes.md
PR: 224251
Approved by: Jens Grassel <jan0sch@mykolab.com> (maintainer)