macOS

Precompute hash only once when interning string literals #573

Job	Run time
make (check, macos-14)	7m 30s
make (check, macos-14, --with-gcc=gcc-14)	11m 35s
make (test-all, --repeat-count=2, macos-14)	10m 19s
make (test-bundler-parallel, macos-14)	15m 55s
make (test-bundled-gems, macos-14)	9m 38s
make (check, macos-12)	8m 20s
make (check, macos-13)	11m 33s
macOS result	1s
	1h 14m 51s

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