Revert inadvertent Brocfile changes.

Changes were made in cc39229.
Cleanup enumerable
Merge pull request #5541 from knownasilya/uniq

Cleanup enumerable mixin
More ES3 fixes.

Still need to conditionally switch on browsers that do not have ES5 compliant accessors, because isEnabled is compiled out based on development vs production build.
Merge pull request #5535 from krisselden/mandatory-setter-es3-fix

Fix for ES3 browsers in development mode.
[DOC] Small grammar fix on enumerable filter method
Merge pull request #5545 from shama/typo

[DOC] Small grammar fix on enumerable filter method
[DOC release] fixed spelling error in dag.js docs
Merge pull request #5551 from davidpett/patch-1

[DOC release] fixed spelling error in dag.js docs
Multiline
Merge pull request #5554 from twokul/multiline

Multiline
Update ember-cli to 0.0.44.
Merge pull request #5561 from rwjblue/update-ember-cli

Update ember-cli to 0.0.44.
Pull in LazyValue and ember-metal integration
Use LazyValue in view helper
Remove relative context Handlebars tests
Use LazyValue in log helper
Register and teardown streams
Use LazyValue in bind-attr helper
Use LazyValue in render helper