Merge commit '2d0a6ca27c6f75eb0ec881fe4ad0b4f478d941c0'
* commit '2d0a6ca27c6f75eb0ec881fe4ad0b4f478d941c0':
nexctl: Refactor so Nexus can be tested from scripts easily.
libsysutils: Move to a null terminated string protocol using space as a field separator.