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Remove unused import, commas at the end of dictionaries.

The logging module allow us to configure logging facilities once per
process using basicConfig, and then to use globally defined, named,
logger objects. This simplifies access to logger objects, their
configuration and remove pointers from all objects.

This patch refactor all the logging calls to use a single 'nrm' logger
object, using those facilities.

The Argus (globalos) launcher had prototype code to read a container
manifest, create a container using Judi's code, and map resources using
hwloc.

This patch brings that code, almost intact, into the NRM repo. This code
is quite ugly, and the resource mapping crashes if the kernel
configuration isn't right. But it's still a good starting point, and we
should be able to improve things little by little.

One part in particular needs attention: SIGCHLD handling. We should
think of using ioloop-provided facilities to avoid this mess.

The patch also contains the associated CLI changes.

Note: the messaging format is starting to be difficult to keep in check,
as there's conversions and field checks all over the code. See #3 for
a possible solution.