Reason for not using postonly instead is that anonymous persistence may be
good in some erp5 use cases (ex: shopping cart), and also authentication
cookie may outlive haproxy cookie and may lead to no persistence afterward.

Fix spurious newlines being emitted, breaking published values.
Also, remove unneeded whitespace trimming on "else" statement.

The way to request frontend has changed a lot since this code was written.
Find a way to not depend on how frontend work, to not have to keep SRs
synchronised with frontend flavours.

Allow creating databases without associated user account.
Do not document this, as it is part of a yet-incomplete feature.

MySQL changed the default value 3 times since 5.1, causing a waste of disk
space when recreating schemas (tables move out of an already large system
tablespace, which cannot be easily reclaimed).
Also, per-table option fragments free space: if a table shrinks, freed
space cannot be used by another table without recreating shrunk table
(which induces at least a write-lock during data copy, which may not be
trivial).

Remove non-needed parameters, empty unused parameter.
Move "inituser" closer to "user" and "password", as they are related.

Also, do not look unused options up.

When there are many ZODBs, this command can exceed crond's maximum 1024
bytes limit.

drop buildout.dumppickedversions extension because buildout-versions already exists for similar purpose.

As test database count could not yet be changed to 0, this point is still
a blocker.

because the default value changed from off to on in MySQL 5.6.6.