Add Ninja support for MSVS $(TargetExt), $(TargetFileName) and $(TargetPath) macros.

test/win/vs-macros/targetfilename.gyp

Index: test/win/vs-macros/targetfilename.gyp
diff --git a/test/win/vs-macros/targetfilename.gyp b/test/win/vs-macros/targetfilename.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..82873202789ffee156002ed24eb50505613b65e3
--- /dev/null
+++ b/test/win/vs-macros/targetfilename.gyp
@@ -0,0 +1,59 @@
+# Copyright (c) 2014 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.
+
+{
+ 'targets': [
+    {
+      'target_name': 'test_targetfilename_executable',
+      'type': 'executable',
+      'sources': ['hello.cc'],
+      'msvs_settings': {
+        'VCLinkerTool': {
+          'OutputFile': '$(TargetDir)\\$(TargetFileName)',
+        },
+      },
+    },
+    {
+      'target_name': 'test_targetfilename_loadable_module',
+      'type': 'loadable_module',
+      'sources': ['hello.cc'],
+      'msvs_settings': {
+        'VCLinkerTool': {
+          'OutputFile': '$(TargetDir)\\$(TargetFileName)',
+        },
+      },
+    },
+    {
+      'target_name': 'test_targetfilename_shared_library',
+      'type': 'loadable_module',
+      'sources': ['hello.cc'],
+      'msvs_settings': {
+        'VCLinkerTool': {
+          'OutputFile': '$(TargetDir)\\$(TargetFileName)',
+        },
+      },
+    },
+    {
+      'target_name': 'test_targetfilename_static_library',
+      'type': 'static_library',
+      'sources': ['hello.cc'],
+      'msvs_settings': {
+        'VCLibrarianTool': {
+          'OutputFile': '$(TargetDir)\\$(TargetFileName)',
+        },
+      },
+    },
+    {
+      'target_name': 'test_targetfilename_product_extension',
+      'type': 'executable',
+      'sources': ['hello.cc'],
+      'product_extension': 'foo',
+      'msvs_settings': {
+        'VCLinkerTool': {
+          'OutputFile': '$(TargetDir)\\$(TargetFileName)',
+        },
+      },
+    },
+  ]
+}