OSMF SVN

PARB changes: Remove unload and query methods from PluginManager. We lack compelling use cases for those methods, but can easily re-add them later if we come across some.

Extending layout sample to cover vertical and horizontal modes, and updating layout renderer box calculations.

Adding a SynchronizedParallelElement sample, that monitors the buffer trait, pausing the element as a whole until buffering is complete. Additionally having the 'buffering' property reflected on the UI.

Created tag 20100212.

PARB changes: Rename pluginInfoRef to pluginInfo.

PARB refactoring: Remove IMediaReferrer interface and CREATE_ON_LOAD type. The IMediaReferrer interface has been supplanted by a mediaElementCreationNotificationFunction property on MediaFactoryItemType. This callback is invoked any time the MediaFactory creates a new MediaElement. Thus, the MediaFactoryItem from the PluginInfo can coordinate any cross-referencing between its MediaElements and the factory's created MediaElements. And given that CREATE_ON_LOAD was introduced to ensure that the MediaFactoryItem's MediaElement could pick up references to other created MediaElements, that type is no longer necessary because the MediaFactoryItem could specify a notification callback, and do the initialization work it wanted to do at "create on load" time in its own constructor. In other words, by decoupling MediaElement referencing from the MediaElements themselves, we remove the need for CREATE_ON_LOAD.

The ControlBarPluginSample has been updated to demonstrate how to accomplish referencing without the use of IMediaReferrer.

Update unit tests, plugins, and sample apps.

Add a few more @privates.

Change ManifestParser to pick up stream metadata and xmp metadata.

Remove obsolete sample apps. They've been archived, in case we ever need to revive them.

Fixed bug where regular non-http streaming manifest was getting bootstrap info. Updated unit tests to check for this condition.