* add constants for dlopen flags, which are needed
for dlopen's flag passing.
* introduce an optional parameter for process.dlopen(),
allowing to pass dlopen flags (using values from os.constants.dlopen).
If no flags are passed, the default behavior is to load the library
with RTLD_LAZY (perform lazy binding) and RTLD_LOCAL (symbols are
available only locally).
PR-URL: https://github.com/nodejs/node/pull/12794
Refs: https://github.com/nodejs/node/pull/4105
Refs: https://github.com/libuv/libuv/pull/1331
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Ezequiel Garcia