[BUG] Unix(ish) builds

[Paul Dufresne]

>It seems that Attila's work with plugins has required this work-around:
>"export LD_LIBRARY_PATH=(slate working directory here)"
>be run before executing "make plugins" .. it's either that or including the 
>setting within >the Makefile. This configuration is still in flux so there 
>will likely be a solution soon
Actually, this need to be done, before calling repl.
I have saved my image after "load: 'src/plugins/smart-console/init.slate' "
and changing the LD_LIBRARY_PATH before calling repl, is enough
to have the old or the new Console loaded depending of LD_LIBRARY_PATH 
value.

--Paul