OSMF SVN

Adding file missing from previous commit.

ChromeLibrary update:

* Unbinding chrome font and visuals from the ChromeLibrary project,
* Introducing asset loaders, that can load imagery and fonts either from file, or from embedded tags,
* Introducing AssetsManager, a class that loads a set of assets, exposing loaded assets by a string identifier,
* Introducing a number of 'resource' classes, used by assets loaders to determine the type of asset to load,
* Introducing a number of 'asset' classes, used by assets loaders to export their loaded content to, as well as by widgets to reference an asset.
* Introducing AssetsParser, a class that translates XML formatted assets definitions into a set of resource classes.
* Introducing Scale9Bitmap that allows usage of a scale9 rectangle on bitmaps,
* Changing all widgets to be LayoutTargetSprite derived, enabling them to be laid out using the OSMF layout APIs.
* Extending Widget with child management functions, allowing any widget to have children.
* Introducing WidgetsParser, a class that translates XML formatted widget definitions into a set of Widget classes.
* Introducing Configuration, a class that loads an XML file that contains asset- and widget definitions, and sets up an assets manager if so desired.
* Updating both OSMFPlayer and ControlBarPlugin projects to provide their own chrome visuals and fonts using the new configuration system. OSMFPlayer uses run-time asset loading (meaning that all assets are to be uploaded to server alongside the player SWF), and ControlBarPlugin uses embedded resources.

Introduce NetStreamSwitchManagerBase, to decouple MBR logic from base NetLoader.

MediaPlayerSprite. Units tests for MPS.

Fix compile errors when LOGGING is on.

Fix bug in sizing of serial videos (as seen in ExamplePlayer), introduced in recent metadata refactoring.

Fix bug FM-583: Seeking backwards in a SerialElement doesn't cause in-between children to seek to the start, causing the in-between children to be unplayable.

Fixing anchoring 'right' and 'bottom' properties not being applied on items that don't have a width/height and position set.

Reorganize metadata listeners in sample.

Various metadata and composition bug fixes:
- Bubble metadata events up through CompositeElements.
- Change default synthesizer's behavior in parallel to return the first child metadata (regardless of whether multiple children have metadata in that namespace). Although a proper synthesizer is needed in this case, if none is provided it's better to return something than nothing.
- Add some guards around the parallel MBR trait, so that it doesn't RTE when it's the last one removed.
- Reenable some parallel unit tests that had been commented out.