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

pylib/gyp/generator/ninja.py

 # Copyright (c) 2013 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 collections
 import copy
 import hashlib
 import json
 import multiprocessing
 import os.path
@@ skipping 1508 matching lines @@
     # by the Mac Ninja generator.
     import gyp.generator.xcode as xcode_generator
     generator_additional_non_configuration_keys = getattr(xcode_generator,
         'generator_additional_non_configuration_keys', [])
     generator_additional_path_sections = getattr(xcode_generator,
         'generator_additional_path_sections', [])
     global generator_extra_sources_for_rules
     generator_extra_sources_for_rules = getattr(xcode_generator,
         'generator_extra_sources_for_rules', [])
   elif flavor == 'win':
+    exts = gyp.MSVSUtil.TARGET_TYPE_EXT
     default_variables.setdefault('OS', 'win')
-    default_variables['EXECUTABLE_SUFFIX'] = '.exe'
+    default_variables['EXECUTABLE_SUFFIX'] = '.' + exts['executable'] 
     default_variables['STATIC_LIB_PREFIX'] = ''
-    default_variables['STATIC_LIB_SUFFIX'] = '.lib'
+    default_variables['STATIC_LIB_SUFFIX'] = '.' + exts['static_library']
     default_variables['SHARED_LIB_PREFIX'] = ''
-    default_variables['SHARED_LIB_SUFFIX'] = '.dll'
+    default_variables['SHARED_LIB_SUFFIX'] = '.' + exts['shared_library']
 
     # Copy additional generator configuration data from VS, which is shared
     # by the Windows Ninja generator.
     import gyp.generator.msvs as msvs_generator
     generator_additional_non_configuration_keys = getattr(msvs_generator,
         'generator_additional_non_configuration_keys', [])
     generator_additional_path_sections = getattr(msvs_generator,
         'generator_additional_path_sections', [])
 
     gyp.msvs_emulation.CalculateCommonVariables(default_variables, params)
@@ skipping 741 matching lines @@
           arglists.append(
               (target_list, target_dicts, data, params, config_name))
         pool.map(CallGenerateOutputForConfig, arglists)
       except KeyboardInterrupt, e:
         pool.terminate()
         raise e
     else:
       for config_name in config_names:
         GenerateOutputForConfig(target_list, target_dicts, data, params,
                                 config_name)