Log Message:
Update GConf2 and GConf2-ui to 2.8.1:

 Fixes
  - If the toplevel directory of a source isn't writable, then mark the
    whole source as readonly (Mark)
  - Plug various leaks (Kjartan)

 Translators
  - Christophe Merlet (RedFox) (fr)
  - Alessio Frusciante (it)
  - Žygimantas Beručka (lt)
  - Li-Jen Hsin (zh_TW)