This should resolve issue #113.
Added function to load code modules, clean directories within data and
using new put dir function where needed.
Changing die-die-die! approach to use cast in case remote call to node
to shoot itself in the head hangs.
It is not safe to compile code, that calls lager, with Riak Test and
then run that code on the remote nodes. Depending on the version the
remote node will have a different lager version. If the API has
changed between versions then the calls will fail and leave a
non-obvious error message for the test runner to decipher. This is
exactly what happened to me recently as the upcoming 1.3 release is
following lager master but Riak Test is using lager 1.2.1. There is
an api change between those two causing the info call to fail.
https://github.com/basho/lager/compare/1.2.1...d6482649#L5L54
