TODO

* Finalize the onewire plugin.
* Custom notification messages?
* Implement moving-average calculation for the threshold stuff.

src/battery.c: commend not working code.

Wishlist:
* Port nfs module to solaris
* Port tape module to Linux
* Port the apple_sensors plugin to Linux/PPC.
* Maybe look into porting the serial module
* Build Darwin package
* Maybe let the network plugin configure whether or not notifications should be
  sent/received.
* Maybe find a way for processes connected to the unixsock plugin to receive
  notifications, too.

http://developer.apple.com/documentation/DeviceDrivers/Conceptual/AccessingHardware/AH_IOKitLib_API/chapter_5_section_1.html
http://developer.apple.com/documentation/DeviceDrivers/Conceptual/IOKitFundamentals/index.html#//apple_ref/doc/uid/TP0000011
http://www.gauchosoft.com/Software/X%20Resource%20Graph/
http://johannes.sipsolutions.net/PowerBook/Apple_Motion_Sensor_Specification/