CLJS-2430: Fix foreign-libs with Node target

Foreign libraries need to be loaded using nodeGlobalRequire instead of
Node require. This will emit opt_loadFlag for foreign lib deps to cljs_deps.js
and check that in CLOSURE_IMPORT_SCRIPT to select Node require or
nodeGlobalRequire.

Author: Deraen

src/main/cljs/cljs/bootstrap_node.js

@@ -73,7 +73,12 @@ global.CLOSURE_IMPORT_SCRIPT = function(src, opt_sourceText) {
     // Sources are always expressed relative to closure's base.js, but
     // require() is always relative to the current source.
     if (opt_sourceText === undefined) {
-        require(path.join(".", "..", src));
+        var flags = goog.dependencies_.loadFlags[src];
+        if (flags && flags["foreign-lib"]) {
+            nodeGlobalRequire(path.resolve(__dirname, "..", src));
+        } else {
+            require(path.join(".", "..", src));
+        }
     } else {
         eval(opt_sourceText);
     }

src/main/clojure/cljs/closure.clj

@@ -1446,7 +1446,9 @@
                     ;; under Node.js we emit native `require`s for these
                     (= :nodejs (:target opts))
                     (filter (complement ana/node-module-dep?))))
-         "]);\n")))
+         "]"
+         (if (deps/-foreign? input) ", {'foreign-lib': true}")
+         ");\n")))
 
 (defn deps-file
   "Return a deps file string for a sequence of inputs."