Log Message:
lang/nodejs: Update to 9.7.1.

- libuv: Updated to libuv 1.19.2
- src: Add initial support for Node.js-specific post-mortem
  metadata
- timers: The return value of setImmediate() now has ref() and
  unref() methods
- util: It is now possible to get the name for a numerical
  platform-specific error code as a string