OSMF SVN

Update Akamai plugin to remove unneeded constructor param.

Remove unnecessary constructor params.

Refactor unit tests for composite audio and buffer traits.

Temporarily remove nonfunctional composite traits to minimize compile errors.

Fix compile errors.

Progress on refactoring the composition layer. Updated composite play trait. Hooked up unit tests for the classes that have been refactored.

Remove temp code.

Unit test for the captioning plugin.

Fixed Metadata issue with the loadable proxy element.

Fixed some more bugs that were introduced in the refactoring.