The same code was already being called in the end, but now we're
bypassing the soon-to-be-deprecated backwards-compatibility shim.

These have apparently been there from the beginning, but seem to have
never been used and never documented.

This also deprecates iterable-of-TaskDef inputs to
SimplePipelineExecutor.

This deprecates the 'builder' argument to make_quantum_graph in favor
of the new 'builder_class' argument.

Since the QG is now frequently responsible for carrying information
about registry dataset types to executing code, we don't want it to be
legal to change the registry definition after making a QG and then run
that QG.  We also can't really stop it most of the time, but we can at
least make these tests not do it.

...instead of PipelineDatasetTypes.

This includes a check on changes to registry dataset types between QG
generation and execution, but only when executing with full butler.

Calling code in this package will be updated to avoid the new warning
in a later commit.

Calling code in this package will be updated to avoid the new warning
in a later commit.

This should eliminate all new deprecation warnings from internal
ctrl_mpexec calls.

It's easier to deprecate the whole function than it is to migrate its
return type.

I'm deferring actually removing this usage to DM-40639, since there's
an opportunity to easily make a nice improvement to this code at the
same time, but only after DM-39779 merges (and I don't want to increase
the scope of this ticket further).

Co-authored-by: Tim Jenness <tjenness@lsst.org>