imapx_is_duplicate_fetch_or_refresh: Fix incorrect bit-flag test
Bug 699597 - EBookSqlite: Add indices on family_name, nickname, given_name and file_as

The Evolution address autocompletion uses these, and we really want it to
be fast. So enable indices on the *unlocalised* column by default.
Bug 699597 - EBookSqlite: Fix queries to use LEFT JOIN where appropriate

This fixes the test case added in commit 5f9f5b52. We need to use LEFT JOIN
in the cases when we need to include records that have no auxiliary data, but
we really don't want to do that unless we need to because it's slow.

So add some logic to track it. The interesting question, as we process each
clause, is whether this clause is *mandatory* — does it *have* to match, for
a given record to show up in the final results?  In the simple case of a
single 'AND', all its subclauses *are* mandatory. In the simple case of a
single 'OR', its subclauses are not (because a record can make its way into
the results without matching any specific subclause).

Since we need to err on the side of caution, the simplest approach was
just to bail and use 'LEFT JOIN' whenever we are referencing an auxiliary
field inside any 'OR'. But that was suboptimal in some cases where the
*same* auxiliary field was being tested twice. So we check whether all
subclauses of an 'OR' are on the same field, and we don't make it fall
back to LEFT JOIN when that's the case.

It helps that we never support NOT on auxiliary field checks, which would
make the whole thing a lot harder to think about...
Bug 699597 - EBookSqlite: Use UNION for autocomplete queries

The sqlite query planner does a really bad job here. It ought to realise
that it could do the searches on fields in folder_id directly from the
folder_id table, indices and all.

So recogise this case for ourselves and rephrase it so the query planner
doesn't do so badly. If it's just a logical 'OR' of a bunch of conditions,
some of which are auxiliary fields and some are not, then use a basically
hand-crafted query using UNION to make sure sqlite notices the fast way
to do it.

This takes the autocomplete query on my 237000-entry EWS GAL from about
1700ms to 6ms.

Yes, it's an icky special case and it *really* ought to be considered
a sqlite bug. But it's an important special case because the user is
waiting for it while they type and delays are really noticeable. And
it's a *big* win.

Discussed at
https://www.mail-archive.com/sqlite-users@sqlite.org/msg86350.html
https://www.mail-archive.com/sqlite-users@sqlite.org/msg86643.html
Bug 737903 - [SMTP] Crash when authentication fails
CamelMimeFilterToHTML - If the PRE close tag is written to the output, mark it as processed in private as well
Updated Italian translation
Do not define EBackend::online as G_PARAM_CONSTRUCT

This means that the notify::online are invoked (newly?) also during
the construction time, which calls the listeners, but they might not
be fully ready, because it is before the 'constructed' method call.
This is partly discussed at bug 737773.
Fixed introspection annotations.
Bug 737951 - CAMEL_DEBUG=smtp should provide information about SMTP server

This also adds more detailed debugging about the sent and received data
between the server and the client.
[SMTP] Fails to send message after a change for bug 737903

Some SASL authentications can return NULL challenge as a valid
value, without providing an error. This detail the previous change
missed, thus some authentication types failed for SMTP.
Bug 737733 - [IMAPx] Prevent "Stream has outstanding operation" error

...by guarding writes to output streams with a lock, to not write
to the same stream in multiple threads at once.
Updated Spanish translation
Bug 223621 - Add per-account mail Archive Folder option
Bug 738288 - EBookSqlite is leaking memory in ebsql_ref_from_hash function

ebsql_ref_from_hash from EBookSqlite is always returning NULL, even if instance
for given database was found in hash and its reference count was increased,
creating memory leak.
Bug 698964 - Hide password prompt right after getting the password
Bug 708166 - Update EClient properties on idle after GDBusProxy notify
Bug 737930 - Claims invalid PGP signature for single line mail
Bug 738724 - [IMAP] Message flag changes not always saved
Update MAINTAINERS, doap.

Remove myself (and other former maintainers) and add Milan.