GitLab

Also fix bug in ssl_list_ciphersuites().

For now, disable it on server.
Client will offer it but fail if server selects it.

Fixes clang warning

development

- better error codes
- rm now-useless include

Also add pk_get_name() to remove a direct access to pk_type

Also add some forgotten 'static' while at it.

Finally get rid of pk_context.type member, too.

Also fix a const-corectness issue.

Also fix bug/limitation in mpi_copy: would segfault if src just initialised
and not set to a value yet. (This case occurs when copying a context which
contains only the public part of the key, eg.)

- trust chain of depth 0
- invalid signature
- trust chain of depth 2
- multiple trusted CA's