[gpm] GNOME Power Manager 2.21.1

[Richard Hughes <hughsient gmail com>]

GNOME Power Manager is a session daemon that makes it easy to manage the
power on your laptop or desktop system.

This _unstable_ release contains lots of crazy new code since 2.20.1 was
released. WARNING, this code may impregnate your cat called Dave and
steal all of the magazines from the bathroom.

==============
Version 2.21.1
==============

- Fixed #413360, After loading gnome gpm starts but shows nothing in tray icon despite option (Mart Raudsepp)
- Fixed #474973, Lack of context to translate (Gabor Kelemen)
- Fixed #497298, The +/- buttons on the brightness applet sometimes get stuck. (Simon Zheng)
- Fixed #497298, Avoid float computation error (Simon Zheng)
- Fixed #497328, Incorrect documentation for --enable-checkfg (Josselin Mouette)
- Fixed #496367, Work out the size of the label text to avoid truncating numbers in other locales (Richard Hughes)
- Correct much of the documentation in many different ways (Bob Mauchin)
- Use _NEVER for sleep problems notification, so that the user can always see it (Rodrigo Moya)
- Pass make distcheck on a desktop machine without a battery (Richard Hughes)
- Fix the keyboard brightness up button. From the ubuntu patch archive (Richard Hughes)
- Use the correct DBUS return types now HAL enforces the return type (David Zeuthen)
- Rip out GpmWebcam - it's pretty crack, and I'm getting some odd bugreports
  about flashing webcam lights and brightness levels changing (Richard Hughes)

Translations:
- Updated fr: merged from gnome-2-20
- Updated bg: Alexander Shopov
- Updated pt_BR: Guilherme de S. Pastore
- Updated ca: Jordi Mallach
- Updated ko: Changwoo Ryu
- Updated sv: Daniel Nylander
- Updated mk: Jovan Naumovski
- Updated ar: Djihed Afifi
- Updated pl: Artur Flinta
- Updated et: Priit Laes
- Updated nb: Kjartan Maraas
- Updated es: Jorge Gonzalez