CI-mingw

Fix #688: Support `#elifdef` and `#elifndef` #339

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Run time

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Job	Run time
build (g++, MINGW32)	3m 39s
build (g++, MINGW64)	3m 42s
build (clang++, MINGW64)	3m 37s
build (clang++, CLANG64)	3m 48s
	14m 46s