disable win pch for v8 internal helper

rogerwang · rogerwang · commit 4097cced3247 · 2015-02-26T15:59:16.000+08:00
diff --git a/nw.gypi b/nw.gypi
@@ -451,6 +451,8 @@
           'SubSystem': '2',  # Set /SUBSYSTEM:WINDOWS
         },
       },
+      'msvs_precompiled_header': '',
+      'msvs_precompiled_source': '',
       'configurations': {
         'Debug': {
           'defines': [ 'DEBUG' ],
