Ch.I.CredentialsStorage is disabled, since it's not an official interface

and would be difficult to compile. From what I know, it's only useful if we

wish to be able to store credentials provided to telepathy and unrelated to

any libaccounts account in libsignon, which isn't relevant for the use case

here.

TLS channels are disabled and certificate validation is left to CMs.

OAUTH2 mechanisms are disabled right now to force the use of password

authentication; that's expected to change.