Change node module load order

Try looking in the directory containing the label first, before the one in the working directory.
Needed for tsickle tests to use a different TypeScript version in one test, and probably generally useful.

internal/node_loader.js

@@ -104,13 +104,13 @@ var originalResolveFilename = module.constructor._resolveFilename;
 module.constructor._resolveFilename =
     function(request, parent) {
   var failedResolutions = [];
-  var resolveLocations = [
-    request,
-    resolveRunfiles(request),
-    resolveRunfiles(
+  // Locations to search for require'd modules.
+  var resolveLocations = [];
+  // First we look in more specific paths under the label being built
+  // This allows a test to specify a subdirectory where we should find modules
+  resolveLocations.push(resolveRunfiles(
       'TEMPLATED_user_workspace_name', 'TEMPLATED_label_package',
-      'node_modules', request),
-    ];
+      'node_modules', request));
   // Additional search path in case the build is across workspaces.
   // See comment in node.bzl.
   if ('TEMPLATED_label_workspace_name') {
@@ -120,6 +120,13 @@ module.constructor._resolveFilename =
         'node_modules', request)
     );
   }
+  // Finally we look in the current working directory
+  // and in the runfiles manifest
+  resolveLocations.push(
+    request,
+    resolveRunfiles(request)
+  );
+
   for (var location of resolveLocations) {
     try {
       return originalResolveFilename(location, parent);