Revert "Bug: Fix order of 'arakoon_multi_get' result"

Turns out this was a bug/regression/change in the Arakoon node protocol,
not the clients.

This reverts commit d3ed4069c9eb13c2c6d8ab99c54fc790db286405.

Change-Id: I9e9c1c4798c61e7baa338b5a92136b55ace67ee3
See: http://jira.incubaid.com/browse/ARAKOON-436