[nautilus-actions] check-headers.sh: bump copyright year

[Pierre Wieser <pwieser src gnome org>]

commit 34db612e9a812b3d8f45723409fe1e73d743f398
Author: Pierre Wieser <pwieser trychlos org>
Date:   Tue Feb 21 17:24:56 2017 +0100

    check-headers.sh: bump copyright year

 maintainer/check-headers.sh |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/maintainer/check-headers.sh b/maintainer/check-headers.sh
index cb97195..7233524 100755
--- a/maintainer/check-headers.sh
+++ b/maintainer/check-headers.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/ksh
 # FileManager-Actions
 # A file-manager extension which offers configurable context menu actions.
 #
@@ -111,7 +111,7 @@ function msg_version
        pck_version=$(grep '^PACKAGE_VERSION' ${makefile} 2>/dev/null | awk '{ print $3 }')
        echo "
  ${pck_name} v ${pck_version}
- Copyright (C) 2010, 2011, 2012, 2013 Pierre Wieser."
+ Copyright (C) 2010-2017 Pierre Wieser."
 }
 
 # initialize common command-line options