Fix -e/--eval can't load module from node_modules

[koichik]

With -e or --eval, require() can load module using relative path.

node -e 'require("./foo")'

But it can't load module from node_modules directory.
Reproduce:

$ node -e 'require("foo")'

module.js:322
    throw new Error("Cannot find module '" + request + "'");
          ^
Error: Cannot find module 'foo'
    at Function._resolveFilename (module.js:322:11)
    at Function._load (module.js:267:25)
    at require (module.js:351:19)
    at Object.<anonymous> (eval at <anonymous> (eval:1:82))
    at Object.<anonymous> (eval:1:70)
    at Module._compile (module.js:407:26)
    at Function.runEval (node.js:357:27)
    at startup (node.js:57:17)
    at node.js:443:3

[ry]

lgtm. thanks koichi