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fix #3275

fix #3273

fix #3339

Supports the "seconds", "maxstanzas", "since" and "maxchars" (but only =0)
attributes.

fix #3270

fix #3291

Entirely replace LiteSQL

fix #3271

fix #3234

This way, the user is always up to date, instead of being a duplicate out of
sync.

fix #3258

fix #3236

fix #3260

fix #3260

We still split the JOINs with a key and the ones without

fix #3230

Use OBJECT libraries
Remove the louloulibs directory
Write FOUND variables in the cache

This reverts commit 38ff50f5.

ref #3228

fix #2886

This way, TCPSocketHandler only deal with the message sending/receiving, not
the connect() or anything else.  This will be used for implementing servers
(because when a client is accepted, we don’t need all the connect() and dns
resolution stuff).

Also add a e2e test for the list query