logging: Move easylogging++.h to include/pfasst.

Signed-off-by: Matthew Emmett <memmett@gmail.com>
vector: Remove logging.

Signed-off-by: Matthew Emmett <memmett@gmail.com>
hashdist: Use 'gcc' and 'mpich' packages.

Signed-off-by: Matthew Emmett <memmett@gmail.com>