Add two schema files (*.gschama.xml) to be used in GSettings, one for
the whole accounts information, the other one for each detailed account
information. Main changes happened in e-mail-config-eas-backend.c,
eas-connection.c and eas-account-list.c. Other files contains trivial
changes according to the change of the API. You may now need to re-run
autogen in order to make sure everything is properly updated.