Update NEWS and www.conf with listen.backlog default change

Author: bukka

NEWS

@@ -18,6 +18,7 @@ PHP                                                                        NEWS
   . Added extra check for FPM proc dumpable on SELinux based systems.
     (David Carlier)
   . Added support for listening queue on macOS. (David Carlier)
+  . Changed default for listen.backlog on Linux to -1. (Cristian Rodríguez)
 
 - Intl:
   . Update all grandfathered language tags with preferred values

sapi/fpm/www.conf.in

@@ -36,7 +36,7 @@ group = @php_fpm_group@
 listen = 127.0.0.1:9000
 
 ; Set listen(2) backlog.
-; Default Value: 511 (-1 on FreeBSD and OpenBSD)
+; Default Value: 511 (-1 on Linux, FreeBSD and OpenBSD)
 ;listen.backlog = 511
 
 ; Set permissions for unix socket, if one is used. In Linux, read/write