Log Message:
Update GConf2 and GConf2-ui to 2.6.2:

Fixes:
- Get rid of duplicate '/' with AM_GCONF_SOURCE_2 (Daniel Elstner)
- Don't create a directory for docs if we're not installing them (Julio M.
  Merino Vidal)
- Fix a bug with the markup backend on 64-bit (Joe Marcus Clarke)
- Fix a leak (Kjartan)
- Return an error for incorrect source addresses (Mark)

Translators:
- Gisela Carbonell (ca)
- Christian Neumair (de)
- Christophe Merlet (RedFox) (fr)
- LoneStar (zh_CN)