For version 4.3:
* Add notification stuff to the network plugin
* Add notification stuff to the unixsock plugin
* Add separate warning/critical thresholds.
* Fix the config parsing so that `<Threshold>' can be used.
* Fix the libvirt plugin.

src/battery.c: commend not working code.

Wishlist:
* Update the RPM specfile to
  - build `collectd-apache'
  - be free of syntax erros.
* Port nfs module to solaris
* Port tape module to Linux
* Maybe look into porting the serial module
* Build Darwin package

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/