Update the Node submodule to use the new module wrapper

See the fixed issue for the context. This pulls in a vendored copy of Node that includes the described patch.

Fixes #8358

Test Plan: Built Electron and verified it loaded the sample app correctly and that the module wrapper is the new one by viewing Node's source code in the Blink Inspector.

Added specs and tested with `npm test -- --grep "global variables"`

spec/modules-spec.js

@@ -47,6 +47,28 @@ describe('third-party module', function () {
       })
     })
   })
+
+  describe('global variables', function () {
+    describe('process', function () {
+      it('can be declared in a module', function () {
+        var exportedProcess
+        assert.doesNotThrow(function () {
+          exportedProcess = require('./fixtures/module/declare-process')
+        })
+        assert.strictEqual(exportedProcess, require('process'))
+      })
+    })
+
+    describe('global', function () {
+      it('can be declared in a module', function () {
+        var exportedGlobal
+        assert.doesNotThrow(function () {
+          exportedGlobal = require('./fixtures/module/declare-global')
+        })
+        assert.deepEqual(exportedGlobal, {__global: true})
+      })
+    })
+  })
 })
 
 describe('Module._nodeModulePaths', function () {