Remove some multiline var declarations.

Conflicts:
	packages/ember-application/lib/ext/controller.js
	packages/ember-application/tests/system/initializers_test.js
	packages/ember-handlebars-compiler/tests/precompile_type_test.js
Merge pull request #5364 from cibernox/remove_some_multine_var_declarations

Remove some multiline var declarations.