Move semantic checks shouldn't be based on ranges

[sithhell]

Our move semantics tests should check for a fixed number of copies instead of ranges for known compilers.

[K-ballo]

It was noted that the use of void_guard inhibits elision in MSVC.

[K-ballo]

Probably wise to wait until #1474 (Remove serialize_as_future and invoke_when_ready) happens

[hkaiser]

FWIW, #1474 has long been closed now.

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