[BUGFIX beta] Remove unreachable return in link-to.
Ensure that Ember.DataAdapter exists after Ember is loaded.

This fixes the underlying issue that #4505 was attempting to resolve
(but failed). #4505 ensured that the globals were setup properly upon
creation of an Ember.Application, but it unfortunately doesn't fix
Ember Data's initial boot.

After this PR the globals are all exported as part of the Ember boot
process (instead of during application creation time).
Merge pull request #4507 from rjackson/ensure-extension-support-is-available-after-boot

Ensure that Ember.DataAdapter exists after Ember is loaded.
Remove references to `window`.

These references are already setup properly using `this` which will work
even in non-browser environments or when we do not want to be working in
globals mode (for example when supplying `Ember.lookup` or
`Ember.exports` as mentioned in https://github.com/emberjs/ember.js/commit/305202f).
Generate independent module files.

This allows us to generate custom builds with specific modules embedded
without requiring the full package.

Specifically, this will allow us to generate an
`ember-template-compiler.js` without duplicating all of the details that
exist in `ember-metal/core`.
Merge pull request #4510 from rjackson/generate-independent-module-output

Generate independent module files.
Merge pull request #4509 from rjackson/remove-references-to-window

Remove references to `window`.
Ensure that ember package is in prod builds.

Fixes issue with Ember Data when using ember.prod.js.
Merge pull request #4511 from rjackson/ensure-ember-package-is-in-prod-builds

Ensure that ember package is in prod builds.
Merge pull request #4498 from rjackson/remove-unreachable-return-in-link-to

[BUGFIX beta] Remove unreachable return in link-to.
Fix String.prototype.camelize.
Merge pull request #4513 from rjackson/fix-camelize

Fix String.prototype.camelize.
Require ember-testing if present.

This ensures that the globals are setup properly if `ember-testing` is
present in the build.
Merge pull request #4515 from rjackson/enable-ember-testing-if-present

Require ember-testing if present.
[DOC beta] Fix `method` tag for `makeViewHelper` doc
The API docs were incorrect (and private) for `helper` because
it was being overridden here.
Now both `helper` and `makeViewHelper` will appear correctly.
Merge pull request #4525 from bradfol/doc-handlebars-helper

[DOC beta] Fix `method` tag for `makeViewHelper` doc
Do not override local scope with imported Ember.run in Ember.Test.
Merge pull request #4530 from rjackson/fix-issue-with-es6ing-ember-testing

Do not override local scope with imported Ember.run in Ember.Test.
[DOC] minor doc fix
Merge pull request #4531 from twokul/minor-doc-fix

[DOC] minor doc fix