Also add GPL header to yumfind.

Change-Id: I233c34db87c763fbcc744241900a2a23df9f389c

tools/yumfind

@@ -1,5 +1,21 @@
 #!/usr/bin/python
 
+# 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 Library 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.
+#
+# Parts Copyright 2007 Red Hat, Inc
+
 import warnings
 warnings.filterwarnings("ignore")