Update copyright information.

caca/caca.c

@@ -1,7 +1,7 @@
 /*
- *  libcaca       Colour ASCII-Art library
- *  Copyright (c) 2006-2012 Sam Hocevar <sam@hocevar.net>
- *                All Rights Reserved
+ *  libcaca     Colour ASCII-Art library
+ *  Copyright © 2006—2016 Sam Hocevar <sam@hocevar.net>
+ *              All Rights Reserved
  *
  *  This library is free software. It comes without any warranty, to
  *  the extent permitted by applicable law. You can redistribute it

caca/driver/ncurses.c

@@ -1,8 +1,8 @@
 /*
- *  libcaca       Colour ASCII-Art library
- *  Copyright (c) 2002-2014 Sam Hocevar <sam@hocevar.net>
- *                2007 Ben Wiley Sittler <bsittler@gmail.com>
- *                All Rights Reserved
+ *  libcaca     Colour ASCII-Art library
+ *  Copyright © 2002—2016 Sam Hocevar <sam@hocevar.net>
+ *              2007 Ben Wiley Sittler <bsittler@gmail.com>
+ *              All Rights Reserved
  *
  *  This library is free software. It comes without any warranty, to
  *  the extent permitted by applicable law. You can redistribute it

caca/driver/x11.c

@@ -1,8 +1,8 @@
 /*
- *  libcaca       Colour ASCII-Art library
- *  Copyright (c) 2002-2015 Sam Hocevar <sam@hocevar.net>
- *                2007 Ben Wiley Sittler <bsittler@gmail.com>
- *                All Rights Reserved
+ *  libcaca     Colour ASCII-Art library
+ *  Copyright © 2002—2016 Sam Hocevar <sam@hocevar.net>
+ *              2007 Ben Wiley Sittler <bsittler@gmail.com>
+ *              All Rights Reserved
  *
  *  This library is free software. It comes without any warranty, to
  *  the extent permitted by applicable law. You can redistribute it

caca/figfont.c

@@ -1,7 +1,7 @@
 /*
- *  libcaca       Colour ASCII-Art library
- *  Copyright (c) 2002-2012 Sam Hocevar <sam@hocevar.net>
- *                All Rights Reserved
+ *  libcaca     Colour ASCII-Art library
+ *  Copyright © 2002—2016 Sam Hocevar <sam@hocevar.net>
+ *              All Rights Reserved
  *
  *  This library is free software. It comes without any warranty, to
  *  the extent permitted by applicable law. You can redistribute it

caca/string.c

@@ -1,7 +1,7 @@
 /*
- *  libcaca       Colour ASCII-Art library
- *  Copyright (c) 2002-2012 Sam Hocevar <sam@hocevar.net>
- *                All Rights Reserved
+ *  libcaca     Colour ASCII-Art library
+ *  Copyright © 2002—2016 Sam Hocevar <sam@hocevar.net>
+ *              All Rights Reserved
  *
  *  This library is free software. It comes without any warranty, to
  *  the extent permitted by applicable law. You can redistribute it

caca/t/bug-setlocale.c

@@ -1,7 +1,7 @@
 /*
  *  bug-setlocale: unit test for wrong setlocale() calls
- *  Copyright (c) 2016 Sam Hocevar <sam@hocevar.net>
- *                All Rights Reserved
+ *  Copyright © 2016 Sam Hocevar <sam@hocevar.net>
+ *              All Rights Reserved
  *
  *  This program is free software. It comes without any warranty, to
  *  the extent permitted by applicable law. You can redistribute it

caca/t/check-copyright

@@ -17,7 +17,7 @@ for dir in $(make -s echo-dirs -C "${top_srcdir}"); do
       *)
         continue ;;
     esac
-    if ! grep 'Copyright *([cC])' "${top_srcdir}/${dir}/$x" >/dev/null 2>&1; then
+    if ! grep 'Copyright *\((c)\|(C)\|©\)' "${top_srcdir}/${dir}/$x" >/dev/null 2>&1; then
       echo "error: ${dir}/$x lacks proper copyright information"
       nfails=$(($nfails + 1))
     elif [ -d "${top_srcdir}/.git" ]; then

caca/t/simple.c

@@ -1,7 +1,7 @@
 /*
- *  simple        simple testsuite program
- *  Copyright (c) 2007 Sam Hocevar <sam@hocevar.net>
- *                All Rights Reserved
+ *  simple      simple testsuite program
+ *  Copyright © 2007—2016 Sam Hocevar <sam@hocevar.net>
+ *              All Rights Reserved
  *
  *  This program is free software. It comes without any warranty, to
  *  the extent permitted by applicable law. You can redistribute it