Feature flag: C/C++ overlay #7373

Job	Run time
Ruby analysis (macos-latest, default)	1m 16s
Ruby analysis (macos-latest, linked)	1m 10s
Ruby analysis (ubuntu-latest, default)	50s
Ruby analysis (ubuntu-latest, nightly-latest)	53s
Ruby analysis (macos-latest, nightly-latest)	55s
Ruby analysis (ubuntu-latest, linked)	50s
	5m 54s

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