[gardening] Add the swift license header to the top of our lit.*.cfg.* files and mark them with the python editor marker.

Author: gottesmm

test/lit.site.cfg.in

@@ -1,3 +1,15 @@
+# lit.site.cfg.in - Local configuration for the 'lit' test runner -*- python -*-
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+#
+# -----------------------------------------------------------------------------
+
 import os
 import platform
 import sys

validation-test/lit.cfg

@@ -1,3 +1,15 @@
+# swift/validation-test/lit.cfg ----------------------------------*- python -*-
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+#
+# -----------------------------------------------------------------------------
+
 import sys
 import platform
 

validation-test/lit.site.cfg.in

@@ -1,3 +1,15 @@
+# swift/validation-test/lit.site.cfg.in ---------------------------*- python -*-
+#
+# This source file is part of the Swift.org open source project
+#
+# Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+#
+# -----------------------------------------------------------------------------
+
 import sys
 import platform