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

test/same-target-name-different-directory/gyptest-all.gyp

+#!/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.
+
+"""
+Test cases when multiple targets in different directories have the same name.
+"""
+
+import TestGyp
+
+test = TestGyp.TestGyp()
+
+test.run_gyp('subdirs.gyp', chdir='src')
+
+test.relocate('src', 'relocate/src')
+
+# Test that we build all targets.
+test.build('subdirs.gyp', 'target', chdir='relocate/src')
+test.must_exist('relocate/src/subdir1/action1.txt')
+test.must_exist('relocate/src/subdir2/action2.txt')
+
+# Test that we build all targets using the correct actions, even if they have
+# the same names.
+test.build('subdirs.gyp', 'target_same_action_name', chdir='relocate/src')
+test.must_exist('relocate/src/subdir1/action.txt')
+test.must_exist('relocate/src/subdir2/action.txt')
+
+test.pass_test()