Flush stdout between each e2e test

Disable the throttle limit if negative

Also, invalid values result in -1 being set

Trivial move of a variable in a smaller “ifndef” scope

Fix a few e2e tests that could fail due to race condition

The order of the messages received can be different, if the IRC server
decides so, or lags, or something.

Add two more sleeps, for the same reason

Disable the throttling for two tests that are very very long

Add a timer for each e2e test

Add a sleep in a e2e test

Reasons explained in the comment in the code

Trivially improve a e2e test

Throttle all commands sent to IRC servers

fix #3354

Reject messages from unjoined resources, with an error

fix #3346

Channels’ disco#info includes the number of participants

fix #3311

Merge branch 'v8'

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

fix #3360

Merge branch 'v8'

Add a e2e test for a raw NAMES command

Empty the <command/> nodes before reusing them in our responses

fix #3356

Add a test for the <max>0</max> MAM query

mam: Send “fin complete” only when appropriate

Also simplify how we did the whole “limit + 1”
And fix one bad interpretation of the XEP for the case where the query has
no after or before restriction.

fix #3349

Missing fields in a data-form response are now interpreted as an empty value