Added functionality for resource management, including an OS service
resources and nodes.

Also added an example sript (examples/os/ossim.py) that demonstrates the new functionality.
Added simx.os module in setup.py package list
Updated copyright year
Fix import errors.
Renamed some classes for this.
Merge branch 'os' of https://github.com/sim-x/simx into os

Conflicts:
	simx/process.py
	simx/processmgr.py
Modifications to work correctly in a distributed memory setting.
No real changes. Deleted some commented out lines.
Mainly for testing push connection to git server over https
- Processes are spawned with supplied arguments.
- Also added support for variable length argument list for processes that
are created.
- Added TODO list for high, medium and low priority items for SimX
- Fixed bug in process manager that was causing silent AttributeError exceptions
  inside processes
Removed error-testing line from ossim.py