Optimization: Also handle mere compile time constant value for containers
Optimization: Also handle mere compile time constant value for containers

* This solves a TODO item.

* For anonymous references, and exceptions, we can now also generate
  tuples directly.

* This enables more optimizations e.g. of instance, that would assume
  to not have compile time constants for containers that contained this
  item.

* Reformulations of e.g. "eval" become more likely to be in part
  statically predictable.

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