Convert all files to UTF-8

They were ISO-8859 before.
diff --git a/README-XPDF b/README-XPDF
index e97791c..d43bb60 100644
--- a/README-XPDF
+++ b/README-XPDF
@@ -216,7 +216,7 @@
 pdftex project:
 
 * Han The Thanh
-* Martin Schröder of ArtCom GmbH
+* Martin Schröder of ArtCom GmbH
 
 
 References
diff --git a/poppler/Function.cc b/poppler/Function.cc
index 6452539..adce85a 100644
--- a/poppler/Function.cc
+++ b/poppler/Function.cc
@@ -15,7 +15,7 @@
 //
 // Copyright (C) 2006, 2008-2010, 2013-2015, 2017-2019 Albert Astals Cid <aacid@kde.org>
 // Copyright (C) 2006 Jeff Muizelaar <jeff@infidigm.net>
-// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
+// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
 // Copyright (C) 2011 Andrea Canciani <ranma42@gmail.com>
 // Copyright (C) 2012 Thomas Freitag <Thomas.Freitag@alfa.de>
 // Copyright (C) 2012 Adam Reichold <adamreichold@myopera.com>
diff --git a/poppler/OutputDev.h b/poppler/OutputDev.h
index 2445bcc..b7b113d 100644
--- a/poppler/OutputDev.h
+++ b/poppler/OutputDev.h
@@ -20,11 +20,11 @@
 // Copyright (C) 2009-2013, 2015 Thomas Freitag <Thomas.Freitag@alfa.de>
 // Copyright (C) 2009, 2011 Carlos Garcia Campos <carlosgc@gnome.org>
 // Copyright (C) 2009, 2012, 2013, 2018 Albert Astals Cid <aacid@kde.org>
-// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
+// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
 // Copyright (C) 2012 Fabio D'Urso <fabiodurso@hotmail.it>
 // Copyright (C) 2012 William Bader <williambader@hotmail.com>
 // Copyright (C) 2017, 2018 Oliver Sander <oliver.sander@tu-dresden.de>
-// Copyright (C) 2018 Klarälvdalens Datakonsult AB, a KDAB Group company, <info@kdab.com>. Work sponsored by the LiMux project of the city of Munich
+// Copyright (C) 2018 Klarälvdalens Datakonsult AB, a KDAB Group company, <info@kdab.com>. Work sponsored by the LiMux project of the city of Munich
 // Copyright (C) 2018 Adam Reichold <adam.reichold@t-online.de>
 //
 // To see a description of the changes please see the Changelog file that
diff --git a/poppler/SplashOutputDev.h b/poppler/SplashOutputDev.h
index 72f524a..ef95f70 100644
--- a/poppler/SplashOutputDev.h
+++ b/poppler/SplashOutputDev.h
@@ -16,13 +16,13 @@
 // Copyright (C) 2005 Takashi Iwai <tiwai@suse.de>
 // Copyright (C) 2009-2016 Thomas Freitag <Thomas.Freitag@alfa.de>
 // Copyright (C) 2009 Carlos Garcia Campos <carlosgc@gnome.org>
-// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
+// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
 // Copyright (C) 2011 Andreas Hartmetz <ahartmetz@gmail.com>
 // Copyright (C) 2011 Andrea Canciani <ranma42@gmail.com>
 // Copyright (C) 2011, 2017 Adrian Johnson <ajohnson@redneon.com>
 // Copyright (C) 2012, 2015, 2018 Albert Astals Cid <aacid@kde.org>
 // Copyright (C) 2015, 2016 William Bader <williambader@hotmail.com>
-// Copyright (C) 2018 Stefan Brüns <stefan.bruens@rwth-aachen.de>
+// Copyright (C) 2018 Stefan Brüns <stefan.bruens@rwth-aachen.de>
 //
 // To see a description of the changes please see the Changelog file that
 // came with your tarball or type make ChangeLog if you are building from git
diff --git a/splash/Splash.h b/splash/Splash.h
index 35d61f1..d458a27 100644
--- a/splash/Splash.h
+++ b/splash/Splash.h
@@ -14,7 +14,7 @@
 // Copyright (C) 2005 Marco Pesenti Gritti <mpg@redhat.com>
 // Copyright (C) 2007, 2011, 2018 Albert Astals Cid <aacid@kde.org>
 // Copyright (C) 2010-2013, 2015 Thomas Freitag <Thomas.Freitag@alfa.de>
-// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
+// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
 // Copyright (C) 2012, 2017 Adrian Johnson <ajohnson@redneon.com>
 //
 // To see a description of the changes please see the Changelog file that
diff --git a/splash/SplashBitmap.cc b/splash/SplashBitmap.cc
index f46d235..d12ef46 100644
--- a/splash/SplashBitmap.cc
+++ b/splash/SplashBitmap.cc
@@ -17,7 +17,7 @@
 // Copyright (C) 2009 Stefan Thomas <thomas@eload24.com>
 // Copyright (C) 2010, 2012, 2017 Adrian Johnson <ajohnson@redneon.com>
 // Copyright (C) 2010 Harry Roberts <harry.roberts@midnight-labs.org>
-// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
+// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
 // Copyright (C) 2010, 2015, 2019 William Bader <williambader@hotmail.com>
 // Copyright (C) 2011-2013 Thomas Freitag <Thomas.Freitag@alfa.de>
 // Copyright (C) 2012 Anthony Wesley <awesley@smartnetworks.com.au>
diff --git a/splash/SplashBitmap.h b/splash/SplashBitmap.h
index 4ffe45a..8ffe15c 100644
--- a/splash/SplashBitmap.h
+++ b/splash/SplashBitmap.h
@@ -17,7 +17,7 @@
 // Copyright (C) 2009 Stefan Thomas <thomas@eload24.com>
 // Copyright (C) 2010, 2017 Adrian Johnson <ajohnson@redneon.com>
 // Copyright (C) 2010 Harry Roberts <harry.roberts@midnight-labs.org>
-// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
+// Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com>
 // Copyright (C) 2010 William Bader <williambader@hotmail.com>
 // Copyright (C) 2012 Thomas Freitag <Thomas.Freitag@alfa.de>
 // Copyright (C) 2015 Adam Reichold <adamreichold@myopera.com>