Fix make and ninja backends to sensibly handle duplicate target names in different directories

test/same-target-name-different-directory/src/touch.py

Index: test/same-target-name-different-directory/src/touch.py
diff --git a/test/same-target-name-different-directory/src/touch.py b/test/same-target-name-different-directory/src/touch.py
new file mode 100644
index 0000000000000000000000000000000000000000..4247dac6e996bdc7bbf7ab206753c55687ebe9fc
--- /dev/null
+++ b/test/same-target-name-different-directory/src/touch.py
@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2012 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import shlex
+import sys
+
+# Trim quotes
+sys.argv[1], = shlex.split(sys.argv[1])
+
+f = open(sys.argv[1], 'w+')
+f.write('Hello from touch.py\n')
+f.close()