R1:0f0105e783ef

Send the `aphlict` process log to the `node` log

Summary: I've possibly seen a couple of `aphlict` processes exit under suspicious circumstances (maybe?). Make sure any PHP errors get captured into the log.

Test Plan:
- Added an exception after forking.
- Before change: vanished into thin air.
- After change: visible in the log.

Reviewers: chad

Reviewed By: chad

Differential Revision: https://secure.phabricator.com/D15782