CLJS-1916: __dirname and __filename are not defined when compiling for Node.js with optimizations :none

Author: anmonteiro

src/main/cljs/cljs/bootstrap_node.js

@@ -82,6 +82,8 @@ function nodeGlobalRequire(file) {
   var _module = global.module, _exports = global.exports;
   global.module = undefined;
   global.exports = undefined;
+  global.__dirname = file.substring(0, file.lastIndexOf('/'));
+  global.__filename = file;
   vm.runInThisContext(fs.readFileSync(file), file);
   global.exports = _exports;
   global.module = _module;