Support for src not in project root.

[ToBeReplaced]

Related to: #152

Pedestal recommends a layout of root/app/src and root/test . This doesn't work with clojure-test-for or clojure-test-jump-to-implementation.

clojure-test-for can have an easy fix by replacing "src/" with "project.clj". clojure-test-jump-to-implementation is more sophisticated.

A better solution might be to allow users to set variables for src and test roots.

[monsanto]

Thoughts:

• If you have buffer-local variables clojure-test-file and clojure-implementation-file, then you can adjust non-standard paths per file in a file local variable.
• Is there a lein task that will return the src and test directories that clojure-mode could invoke?

[technomancy]

Closing this; the functionality belongs in a separate library. See #196