macOS

Use obj flag to differentiate RTypedData and RData #673

Job	Run time
make (check, macos-14, --with-gcc=gcc-14)	8m 26s
make (check, macos-14)	6m 50s
make (check, macos-14, --with-jemalloc --with-opt-dir=$(brew --prefix jemalloc))	5m 52s
make (test-all, --repeat-count=2, macos-14)	9m 58s
make (check, macos-15)	5m 57s
make (check, macos-13)	17m 24s
make (test-bundler-parallel, macos-14)	18m 0s
make (test-bundled-gems, macos-14)	8m 51s
make (check, macos-14, --with-gmp)	7m 46s
macOS result	4s
	1h 29m 8s

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