Added simple process state monitor source.

[fingon]

[process]
xbmc=XBMC.App

=> ps axw's for XBMC.App, and based on it's presence sets process.xbmc to off/on.

[balloob]

Cool, I like this addition.

I do would like to see a few fixes before I can accept it.
For one this probably would generate warnings when run with pylint and pep8. You can test it by installing those two tools using pip: pip install pylint pep8 and running it on your code. Reasons why I think it will generate a warning:

• Functions without documentation
• Variable names shorter than 3 characters
• _update_process_state has an unused parameter force_reload

Some other comments;
Because you can't be sure what is happening within the statemachine it is better to set the state to STATE_ON or STATE_OFF even it is the same as before. The statemachine will not change anything or fire a state_changed event if it is the same.

And another point, just a matter of style preference I guess, but line 40-50 can be replaced with:
state = STATE_ON if any(s in line for line in lines) else STATE_OFF

Line 54-57 don't seem to do anything