Added copyright/license to source files that lacked it.

src/BeOS_print.cpp

@@ -17,6 +17,9 @@
   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)
+
+  $Id$
 */
   
 /* Jan. 17, 2003 */