Consequently treat "autoInstantiated" in prepareSolveFMU to trigger the setup.

[juguma]

After fixing FMI.jl#260, it turns out, that if you call simulate with an FMU, which has no instance and instantiate=false, then an instance is auto-instantiated in prepareSolveFMU

Then, if setup=false, this FMU is not sufficiently prepared for the continuous time mode, a circumstance which should be tackled by the already existing parameter autoInstantiated, which is set to true, if the FMU is "auto-instantiated".

The needed setup can be executed, in
prep.jl#L190, but the option autoinstantiated commented out for the (for whatever reason). ** autoinstantiated should be included in the condition.**