OSMF SVN

Created tag fc1-stable.

Fix bug FM-734 - Need easier way to access current FPS of a playing video.

Add readme and copyright headers to sample. Remove explicit SDK dependency.

Fix compile errors in DVRSample.

Add HelloWorld examples for MediaPlayerSprite and LightweightVideoElement.

Removing lingering @parent reference in ASDocs.

Reverting changes made with rev. 15538.

Add filtering tagging for asdocs

Fix for FM-707: Formalizing the prohibition of adding a single media element to multiple composites. Changes encompass:

* Extending MediaElementEvent with a PARENT_CHANGE type, and 'parent' property.
* Having CompositeElement fire a PARENT_CHANGE event when adding or removing children.
* Having MediaElement listen for PARENT_CHANGE events, storing a private reference, throwing an exception ("Error: Element is already a child of another composite element") when the current parent is not null.
* Adding error message to OSMFStrings.

Make DVRCastNetLoader public again as intended