Enable RAW codec for Windows

gyp/dng_sdk.gyp

 # Copyright 2016 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 # The Adobe DNG SDK, an API for reading and writing DNG files.
 {
 'targets': [{
   'target_name': 'dng_sdk-selector',
   'type': 'none',
   'conditions': [
@@ skipping 11 matching lines @@
   'cflags_cc': [ '-fexceptions' ],
   'cflags': [
     '-fexceptions',
     '-w',
     # FIXME: only disable ::posix_memalign() when needed.
     '-DNO_POSIX_MEMALIGN'
   ],
   'msvs_settings': {
     'VCCLCompilerTool': {
       'WarningLevel': '0',
+      'AdditionalOptions': ['/wd4189', ],
     },
   },
   'xcode_settings': {
     'WARNING_CFLAGS': ['-w'],
   },
   'dependencies': [
     'dng_dont_report_errors_flags',
     'dng_flags',
     'dng_frame_larger_than_flags',
     'dng_srcs',
@@ skipping 231 matching lines @@
     ],
   },
 }, {
   'target_name': 'dng_frame_larger_than_flags',
   'type': 'none',
   'direct_dependent_settings': {
     'cflags': ['-Wframe-larger-than=20000'],
   },
 }],
 }