Log Message:
Update abook to 0.5.5

0.5.5
 - i18n support (Cedric Duval)
 - French translation (Cedric Duval)
 - Swedish translation (Susanna Bjorverud)
 - palmcsv import filter (Marc Tardif)
 - use better common code for csv filters (Marc Tardif)
 - translation HOWTO (Cedric Duval)
 - wanderlust export filter (Josef Schugt)
 - create a backup at save time
 - editor undo fix
 - ui_readline limit fix