Unitech/PM2 — pull request #898 by Tjatse (2014-12-23 03:20:55+00:00)
Title: fixed critical bug: `process.env` flattens all env-vars.

Cluster clients can not receive deep-level objects or arrays in the forked process, e.g.:
```javascript
{
"args": [
"foo",
"bar"
],
"env": {
"foo1": "bar1"
}
}
```

will be parsed to
```javascript
{
"args": "foo, bar",
"env": "[object Object]"
}
```

Actually it's a `process.env` problem.