fix newrelic logfile settings (wrong comment delimiter)
read new relic log level from NEW_RELIC_LOG_LEVEL env var
no longer need to check for mod_rewrite on boot
with 2.4.10 out, no need to check for mod_proxy_handler anymore
use custom fd (3) instead of stdout (1) for detecting child process termination
make sure all subprocess exits are caught properly
some more inline comments on process control
suppress first pkill error output too in case processes are gone already; makes 'heroku logs' output a bit less cluttered and confusing on shutdown
HHVM/3.2.0