patch boost #299

Job	Run time
C++ tests on Linux	1m 26s
C++ tests on macOS	3m 48s
Apache2 tests on Linux	3m 35s
Nginx tests on Linux	2m 4s
Apache2 tests on macOS	2m 25s
Nginx tests on macOS	3m 4s
Nginx dynamic module tests on Linux	1m 10s
Passenger Standalone tests on Linux	3m 43s
Passenger Standalone tests on macOS	4m 6s
Nginx dynamic module tests on macOS	1m 11s
Homebrew packaging tests	6m 54s
Node.js tests on Linux	23s
Node.js tests on macOS	30s
Ruby tests on Linux	1m 6s
Ruby tests on macOS	1m 9s
Source packaging tests	26s
	37m 0s

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