Now performing inward integer rounding of column bounds; bug fix in i… #2422

Job	Run time
debug (macos-latest)	6m 6s
debug_all_tests (macos-latest)	24m 12s
debug64 (macos-latest)	12m 41s
debug64_all_tests (macos-latest)	11m 27s
release (macos-latest)	9m 44s
release_all_tests (macos-latest)	10m 4s
Release64 (macos-latest)	10m 20s
Release64_all_tests (macos-latest)	9m 36s
	1h 34m 10s

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