Reject messages from unjoined resources, with an error

fix #3346

Symlink irc.gimp.net to irc.gnome.org as it's the same server

Signed-off-by: Maxime “pep” Buquet <pep@bouah.net>

Channels’ disco#info includes the number of participants

fix #3311

Merge pull request #6 from foosinn/multistage-docker

Remove build packages from docker image by using multistage Dockerfile.

Remove build packages from docker image by using multistage Dockerfile.

Correctly use target_sources instead of target_link_libraries

Don’t add_library(database) with an empty string, that’s not portable

Instead, don’t create the library at all if not needed.

Merge branch 'v8'

Release version 8.3

Make the global ad-hoc configure command available in fixed mode

fix #3360

Merge branch 'v8'

Release version 8.2

Do not use (or present to the user) the Address field in fixed mode

fix #3359

Build the RPM package with botan2

Trivial formatting issue

Please select the confidential flag for bug reports concerning a crash

Merge branch 'v8'

Release version 8.1

Add a e2e test for a raw NAMES command

Handle the NAMES message for an already-joined or non-existing channel

If a user manually does a NAMES query, the result were interpreted as a user
list, which is wrong. And with the special * argument, this would even cause
a crash.

Fix #3357