TODO:

 * Use the callbacks in libnotify to do a What's this? type help prompt.
 * Give user a choice to abort all actions.
 * Give the user the ability to force an Inhibit()'d action
 * Put the graphing stuff out of process
 * Integrate g-p-m with more modules, e.g. nautilus.
 * Improve DBUS interface
 * Control more stuff for UPS's (NUT stuff?)
