Geogram is being used by librt now - not an extra. #229

Job	Run time
Ubuntu GCC Debug Build	30m 13s
Ubuntu GCC Release Build	43m 54s
macOS Clang Release Build	29m 23s
macOS Clang Debug Build	24m 11s
MSVC - Ninja Debug build	39m 13s
MSVC - Ninja Release build	58m 33s
MSVC - Standard Tools Debug Build	54m 19s
MSVC - Standard Tools Release Build	1h 11m 5s
	5h 50m 51s

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