Log Message: Update lang/nodejs to 8.7.0. deps: - update npm to 5.4.2 - upgrade libuv to 1.15.0 - update V8 to 6.1.534.42 dgram: - support for setting dgram socket buffer size fs: - add support O_DSYNC file open constant util: - deprecate obj.inspect for custom inspection tools, build: - there is a fancy new macOS installer