modphp, possible without pain now that we have UPDATE_PLIST_ARGS.
- install empty php-fpm.d directory and handle pkg_delete -c with @extraunexec
- cat www.conf to the end of php-fpm.conf on all of !5.6, previously this was
just done on 7.0. (not installing this to php-fpm.d/www.conf to avoid making
a conflicting config for updating users).