Disable warnings in VS since they won't be fixed anytime soon.

This is to enable warnings as error.
Review URL: http://codereview.chromium.org/6880241

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/libjpeg_turbo@83675 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
diff --git a/libjpeg.gyp b/libjpeg.gyp
index 6ce0e18..ea2282e 100644
--- a/libjpeg.gyp
+++ b/libjpeg.gyp
@@ -97,6 +97,7 @@
               '.',
             ],
           },
+          'msvs_disabled_warnings': [4018, 4101],
           'conditions': [
             [ 'OS!="win"', {'product_name': 'jpeg_turbo'}],
             # Add target-specific source files.