Issue 4907 - Update v8 to 5.7.278 in libadblockplus

shell/shell.gyp

 {
   'targets': [{
     'target_name': 'abpshell',
     'type': 'executable',
     'dependencies': [
       'libadblockplus.gyp:libadblockplus'
     ],
     'sources': [
       'src/Main.cpp',
       'src/Command.cpp',
       'src/GcCommand.cpp',
       'src/HelpCommand.cpp',
       'src/FiltersCommand.cpp',
       'src/MatchesCommand.cpp',
       'src/PrefsCommand.cpp',
       'src/SubscriptionsCommand.cpp'
     ],
+    'msvs_settings': {
+      'VCLinkerTool': {
+        'SubSystem': '1',   # Console
+      }
+    },
     'xcode_settings': {
       'OTHER_LDFLAGS': ['-stdlib=libstdc++'],
     },
   }]
 }