[refactor] Replace daemon.node with child_process.fork

It isn't perfect yet, but it works in `node v0.6`.

lib/forever.js

@@ -10,9 +10,9 @@ var fs = require('fs'),
     path = require('path'),
     events = require('events'),
     exec = require('child_process').exec,
+    fork = require('child_process').fork,
     net = require('net'),
     cliff = require('cliff'),
-    daemon = require('daemon'),
     nconf = require('nconf'),
     portfinder = require('portfinder'),
     timespan = require('timespan'),
@@ -341,29 +341,15 @@ forever.startDaemon = function (script, options) {
   options.logFile = forever.logFilePath(options.logFile || options.uid + '.log');
   options.pidFile = forever.pidFilePath(options.pidFile || options.uid + '.pid');
 
-  var monitor = new forever.Monitor(script, options);
-
-  fs.open(options.logFile, options.appendLog ? 'a+' : 'w+', function (err, fd) {
-    if (err) {
-      return monitor.emit('error', err);
-    }
-
-    var pid = daemon.start(fd);
-    daemon.lock(options.pidFile);
-
-    //
-    // Remark: This should work, but the fd gets screwed up
-    //         with the daemon process.
-    //
-    // process.on('exit', function () {
-    //   fs.unlinkSync(options.pidFile);
-    // });
-
-    process.pid = pid;
+  if (!process.send) {
+    fork(process.argv[1], ['start', script], {env: process.env});
+    process.exit(0);
+  }
+  else {
+    var monitor = new forever.Monitor(script, options);
     monitor.start();
-  });
-
-  return monitor;
+    return monitor;
+  }
 };
 
 //