Boilerplate: update copyright blurbs on packaging and utility scripts

Includes boilerplates on debug analysis and proxy maintenance scripts.

* Updates CONTRIBUTORS with missing authorship details.

* Updates CREDITS with missing copyright details from associated helpers
  and other third-party code embeded in Squid.

CONTRIBUTORS

@@ -24,6 +24,7 @@ Thank you!
     Andreas Lamprecht <Andreas.Lamprecht@siemens.at>
     Andres Kroonmaa <andre@ml.ee>
     Andrew Beverley <andy@andybev.com>
+    Andrew Doran <ad@interlude.eu.org>
     Andrew Hoying <andrew_hoying@blm.gov>
     Andrey Shorin <tolsty@tushino.com>
     Andrew Tridgell
@@ -34,6 +35,7 @@ Thank you!
     Arjan de Vet <Arjan.deVet@adv.IAEhv.nl>
     Arjan de Vet <Arjan.deVet@adv.iae.nl>
     Arkin <arkin.yang@gmail.com>
+    Arno Streuli <astreuli@gmail.com>
     Arthur Tumanyan <arthurtumanyan@yahoo.com>
     Assar Westerlund <assar@pdc.kth.se>
     Automatic source maintenance <squidadm@squid-cache.org>
@@ -53,6 +55,7 @@ Thank you!
     Changming <me@sunchangming.com>
     Chris Hills <chaz@chaz6.com>
     Christoph Lechleitner <lech@ibcl.at>
+    Christopher Kerr
     Christos Tsantilas <chtsanti@users.sourceforge.net>
     Cloyce <cloyce.spradling@sun.com>
     Constantin Rack
@@ -69,6 +72,7 @@ Thank you!
     Don Hopkins <dhopkins@DonHopkins.com>
     Doug Dixon <doug.dixon@gmail.com>
     Doug Urner <dlu@bsdi.com>
+    Dr. Tilmann Bubeck <t.bubeck@reinform.de>
     Dragutin Cirkovic <painkiller@gromnet.net>
     Duane Wessels <wessels@squid-cache.org>
     Dustin J. Mitchell
@@ -98,6 +102,7 @@ Thank you!
     Geoff Keating <Geoff.Keating@anu.edu.au>
     George Michaelson <ggm@connect.com.au>
     Georgy Salnikov <sge@nmr.nioch.nsc.ru>
+    Gerard Eviston
     Gerben Wierda <Gerben_Wierda@RnA.nl>
     Giancarlo Razzolini <linux-fan@onda.com.br>
     Gilles Espinasse <g.esp@free.fr>
@@ -110,6 +115,7 @@ Thank you!
     Graham Keeling <graham@equiinet.com>
     Guido Serassio <guido.serassio@acmeconsulting.it>
     Guido Serassio <serassio@squid-cache.org>
+    Hank Hampel <hh@nr-city.net>
     Hasso Tepper <hasso@estpak.ee>
     Henrik Nordstr?m <henrik@hlaptop.localdomain>
     Henrik Nordstrom <henrik@henriknordstrom.net>
@@ -129,17 +135,21 @@ Thank you!
     Jean-Francois Micouleau <Jean-Francois.Micouleau@utc.fr>
     Jean-Gabriel Dick <jean-gabriel.dick@curie.fr>
     Jean-Philippe Menil <jean-philippe.menil@univ-nantes.fr>
+    Jens-S. V?ckler <voeckler@rvs.uni-hannover.de>
     Jeremy Allison
     Jerry Murdock <jmurdock@itraktech.com>
     Joachim Bauch <jojo@fistofbenztown.de>
+    Joachim Bauch (mail@joachim-bauch.de)
     Joao Alves Neto <alves_joao@hotmail.com>
     Jochen Obalek
     Jochen Voss <voss@seehuhn.de>
     Joe Ramey <ramey@jello.csc.ti.com>
+    Joe Ramey <ramey@csc.ti.com>
     John Dilley <jad@hpl.hp.com>
     John Saunders <johns@rd.scitec.com.au>
     John Xue <xgxjohn@gmail.com>
     Johnathan Conley <johnathan.conley@gmail.com>
+    Jon Kinred
     Jon Thackray <jrmt@uk.gdscorp.com>
     Jonathan Larmour <JLarmour@origin-at.co.uk>
     Joshua Root <josh+squid@root.id.au>
@@ -162,6 +172,7 @@ Thank you!
     Mark Bergsma <mark@nedworks.org>
     Mark Nottingham <mnot@pobox.com>
     Mark Treacy <mark@aone.com.au>
+    Marcus Kool
     Marc van Selm <selm@cistron.nl>
     Marko <mr_4u2@yahoo.com>
     Marko Cupac <marko.cupac@mimar.rs>
@@ -199,6 +210,7 @@ Thank you!
     Niall Doherty <ndoherty@eei.ericsson.se>
     Nick Rogers <ncrogers@gmail.com>
     Nikolai Gorchilov <niki@x3me.net>
+    Oliver Hookins
     Olivier Montanuy
     Oskar Pearson <oskar@is.co.za>
     Paul Z <paulz42@gmail.com>
@@ -275,6 +287,7 @@ Thank you!
     Tony Lorimer <tlorimer@au.mdis.com>
     Unknown - NetBSD Project
     Unknown FreeBSD Contributor
+    Vince Brimhall
     Vincent Regnard
     Vitaliy Matytsyn (main) <vm@if.bank.gov.ua>
     Vitaliy Matytsyn <vm@if.bank.gov.ua>