Takashi Kokubun eb49aa3119
Fix test_rubyoptions for MinGW (#5363)
* Fix test_rubyoptions for MinGW

follows up a74a2f456ad549025861be80f50cc3f0dd6646dd

* Require jit_support

* Fix MinGW platform

* Handle MinGW UCRT

and fix the prefix

* Make it more robust
2021-12-27 22:22:09 -08:00
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