[Pm-utils] low power mode

[Richard Hughes]

The low power mode script is currently included in CVS. It sets laptop
mode tools, but I've had feedback that some people want to do mad things
like throttling the cpu power and other stuff when on low power mode.

What about a

/etc/pm/lowpower.d/

directory that users/distros can do weird stuff in - for instance
disabling services from running and other odd stuff.

To be honest I'm not sure, but I thought I would get the discussion
going.

Richard.