Add copyright headers to all files

Author: ncw

ast/asdl_go.py

@@ -1,4 +1,9 @@
 #! /usr/bin/env python
+
+# Copyright 2018 The go-python Authors.  All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
 """Generate Go code from an ASDL description."""
 
 # TO DO

ast/ast.go

@@ -1,3 +1,7 @@
+// Copyright 2018 The go-python Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package ast
 
 // FIXME make base AstNode with position in

ast/asttest.py

@@ -1,4 +1,9 @@
 #!/usr/bin/env python3
+
+# Copyright 2018 The go-python Authors.  All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
 """
 Do some ast stuff
 """

ast/dump.go

@@ -1,3 +1,7 @@
+// Copyright 2018 The go-python Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package ast
 
 import (

ast/dump_test.go

@@ -1,3 +1,7 @@
+// Copyright 2018 The go-python Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package ast
 
 import (

ast/walk.go

@@ -1,3 +1,7 @@
+// Copyright 2018 The go-python Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package ast
 
 import "fmt"

ast/walk_test.go

@@ -1,3 +1,7 @@
+// Copyright 2018 The go-python Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package ast
 
 import (

builtin/builtin.go

@@ -1,3 +1,7 @@
+// Copyright 2018 The go-python Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 // Built-in functions
 package builtin
 

builtin/builtin_test.go

@@ -1,3 +1,7 @@
+// Copyright 2018 The go-python Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package builtin_test
 
 import (

builtin/tests/builtin.py

@@ -1,3 +1,7 @@
+# Copyright 2018 The go-python Authors.  All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
 doc="abs"
 assert abs(0) == 0
 assert abs(10) == 10