OSMF SVN

Remove VAST refs from build files.

Add missing imports.

Fix some stray references to TemporaProxyElement and the old package structure.

PARB changes: Rename TemporalProxyElement to DurationElement.

Update import statements to match new package structure.

PARB changes: Move all MediaElement subclasses into the "elements" package. Put internal classes into non-public subfolders (e.g. audioClasses). Update unit tests and sample apps. Remove VAST unit tests from OSMFTest, we should integrate VASTTest into the build system.

Match the FMS behavior where seek-after-end is supported.

Adding inline documentation to the control bar plug-in sample.

Updating sample to have its root-element use an absolute width and height. This ensures that the control bar shows in the right position, regardless of the video content being available yet.

Tweaking sample to have the parallel element use a fixed size.