Made sure GPL notice was included in all other source files.

src/test-option.sh

@@ -1,4 +1,29 @@
 #!/bin/sh
+# 
+# test-option.sh
+# 
+# Tests the GCC compiler for a particular option and returns that option,
+# if successful
+#
+# for Tux Paint
+# by TOYAMA Shin-ichi <shin1@wmail.plala.or.jp>
+#  
+#  This program 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.
+#
+#  This program 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 this program; if not, write to the Free Software
+#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#  (See COPYING.txt)
+# 
+# Last modified 2006.Feb.17
 
 echo 'main(){}' > dummy.c
 gcc $1 dummy.c > /dev/null 2>&1 && echo $1