Add GPLv2+ license to gparted.in script source file

Note the license text of this file differs slightly from the C++
source code license text to indicate this file is a part of GParted.

See:  https://www.gnu.org/licenses/gpl-howto.html

    For programs that are more than one file, it is better to replace
    “this program” with the name of the program, and begin the
    statement with a line saying “This file is part of NAME”.

gparted.in

@@ -1,5 +1,5 @@
 #!/bin/sh
-#
+#     Name:  gparted
 #  Purpose:  Perform appropriate startup of GParted executable gpartedbin.
 #
 #            The purpose of these startup methods is to prevent
@@ -7,6 +7,23 @@
 #            File system problems can occur if devices are mounted
 #            prior to the completion of GParted's operations.
 #
+# Copyright (C) 2008, 2009, 2010 Curtis Gedak
+#
+#  This file is part of GParted.
+#
+#  GParted is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  GParted is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with GParted.  If not, see <http://www.gnu.org/licenses/>.
+#
 
 #
 #  Search PATH to determine if udisks program can be found