OSMF SVN

PARB changes: Move TraitEventDispatcher to traits package. Hide URL.

PARB changes: Merge seekBegin and seekEnd event types into a single seekingChange event type. Add seeking as a getter to the SeekEvent class. Update test code and samples accordingly.

PARB changes: Convert ProxyElement.blocksTrait to a protected setter/getter of blockedTraits.

Remove VAST tests, they're already in VASTTest project.

Rename BeaconEvent type for consistency.

PARB changes: Hide URL/FMSURL, use strings instead. To support the FMS useInstance use case, modify StreamingURLResource to take a urlIncludesFMSApplicationInstance param, which NetConnectionFactory respects. Update unit tests and samples.

PARB changes: Rename FactoryElement to LoadFromDocumentElement. Minor adjustments to some names on NetConnectionFactory, NetStreamSwitchManager, and ContainerChangeEvent. Removed ExternalProperty since it's only used in one place, and the ContainerChangeEvent change broke it.

Fix some ASDoc issues.

Moved SystemUpdater imports back into Conditional Comp blocks.

Updated the DRMTrait to handle multiple update requests simultaneously. Added updating state to allow developers to display status to the end user. Updated composite. Addresses http://bugs.adobe.com/jira/browse/FM-407.