Hi everybody,

I am starting to use org-mode to create literate applications in 
Clojure. So far so good, this is a terrific piece of software.

One thing why I wanted to use org-mode is to use it to create Clojure 
Notebooks. The problem I had is that I have many functions that can take 
some time (more than 10 seconds) to complete. This means that I was 
often receiving that error from nrepl:

===========
nrepl-send-sync-request: Sync nREPL request timed out (op eval session 
57bdacff-b178-4952-8bf8-5e01ac9d745a code (def umbel 
(create-ontology-structure))
===========

The problem is that there is no way to define the nrepl timeout from 
Org-mode. What I did is to expose that nrepl setting in ob-clojure.el. 
This is the ob-clojure.el.diff patch I am proposing here.

The name of the new setting is "org-babel-clojure-nrepl-timeout". If it 
is set to /nil/ then no timeout will occur, otherwise any integer will 
define a timeout value.

This variable can be set from the /.emacs/ global setting file.

It works fine from here, please modify as required.

Thanks,

Fred