Required to support the shared library builds on AIX - this sets the
shared library suffix within GYP to .a instead of .so on AIX
My patch: https://codereview.chromium.org/2492233002/ was landed as
as part of this one which fixed some other (not required, but
included for completeness of the backport) changes:
Ref: https://codereview.chromium.org/2511733005/
PR-URL: https://github.com/nodejs/node/pull/9675
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>