Feature flag: C/C++ overlay #7382

Job	Run time
Ruby analysis (macos-latest, linked)	1m 3s
Ruby analysis (macos-latest, nightly-latest)	50s
Ruby analysis (ubuntu-latest, default)	50s
Ruby analysis (ubuntu-latest, linked)	51s
Ruby analysis (macos-latest, default)	52s
Ruby analysis (ubuntu-latest, nightly-latest)	48s
	5m 14s

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