Don't use require('./run-log.js').runLog

If you happen to introduce a circular require into the stack, this
object will be undefined.

Instead, hang on to `require('./run-log.js')`, which is the exports
module which does get filled in later.

tools/bundler.js

@@ -166,7 +166,7 @@ var release = require('./release.js');
 var Fiber = require('fibers');
 var Future = require(path.join('fibers', 'future'));
 var sourcemap = require('source-map');
-var runLog = require('./run-log.js').runLog;
+var runLog = require('./run-log.js');
 
 
 // files to ignore when bundling. node has no globs, so use regexps

tools/commands.js

@@ -13,7 +13,7 @@ var auth = require('./auth.js');
 var config = require('./config.js');
 var release = require('./release.js');
 var Future = require('fibers/future');
-var runLog = require('./run-log.js').runLog;
+var runLog = require('./run-log.js');
 
 // Given a site name passed on the command line (eg, 'mysite'), return
 // a fully-qualified hostname ('mysite.meteor.com').

tools/meteor-npm.js

@@ -13,7 +13,7 @@ var files = require(path.join(__dirname, 'files.js'));
 var httpHelpers = require('./http-helpers.js');
 var buildmessage = require('./buildmessage.js');
 var utils = require('./utils.js');
-var runLog = require('./run-log.js').runLog;
+var runLog = require('./run-log.js');
 var _ = require('underscore');
 
 var meteorNpm = exports;

tools/run-all.js

@@ -5,7 +5,7 @@ var files = require('./files.js');
 var inFiber = require('./fiber-helpers.js').inFiber;
 var release = require('./release.js');
 
-var runLog = require('./run-log.js').runLog;
+var runLog = require('./run-log.js');
 var Proxy = require('./run-proxy.js').Proxy;
 var AppRunner = require('./run-app.js').AppRunner;
 var MongoRunner = require('./run-mongo.js').MongoRunner;

tools/run-app.js

@@ -10,7 +10,7 @@ var bundler = require('./bundler.js');
 var release = require('./release.js');
 var buildmessage = require('./buildmessage.js');
 var inFiber = require('./fiber-helpers.js').inFiber;
-var runLog = require('./run-log.js').runLog;
+var runLog = require('./run-log.js');
 
 // Parse out s as if it were a bash command line.
 var bashParse = function (s) {

tools/run-log.js

@@ -173,5 +173,12 @@ _.extend(RunLog.prototype, {
   }
 });
 
-// Export a singleton instance of RunLog.
-exports.runLog = new RunLog;
+// Create a singleton instance of RunLog. Expose its public methods on the
+// object you get with require('./run-log.js').
+var runLogInstance = new RunLog;
+_.each(
+  ['log', 'logTemporary', 'logRestart', 'logAppOutput', 'setRawLogs',
+   'finish', 'clearLog', 'getLog'],
+  function (method) {
+    exports[method] = _.bind(runLogInstance[method], runLogInstance);
+  });

tools/run-mongo.js

@@ -6,7 +6,7 @@ var utils = require('./utils.js');
 var release = require('./release.js');
 var mongoExitCodes = require('./mongo-exit-codes.js');
 var inFiber = require('./fiber-helpers.js').inFiber;
-var runLog = require('./run-log.js').runLog;
+var runLog = require('./run-log.js');
 
 var _ = require('underscore');
 var unipackage = require('./unipackage.js');

tools/run-proxy.js

@@ -1,6 +1,6 @@
 var _ = require('underscore');
 var Future = require('fibers/future');
-var runLog = require('./run-log.js').runLog;
+var runLog = require('./run-log.js');
 
 // options: listenPort, proxyToPort, onFailure
 var Proxy = function (options) {

tools/updater.js

@@ -4,7 +4,7 @@ var warehouse = require('./warehouse.js');
 var httpHelpers = require('./http-helpers.js');
 var config = require('./config.js');
 var release = require('./release.js');
-var runLog = require('./run-log.js').runLog;
+var runLog = require('./run-log.js');
 
 /**
  * Downloads the current manifest file and returns it. Throws