OSMF SVN

PARB changes: Remove references to URL within metadata APIs, where Strings would suffice.

first checkin of http streaming live support

Hide some APIs. Add copyright header.

Integrate ExamplePlayer with latest API changes.

Update import statements.

PARB changes: Hide HTTPLoader. Hide Beacon, make BeaconElement work with a URL instead of HTTPLoader.

PARB changes: Make TimeUtil non-public, it doesn't need to be part of the public API.

PARB changes: Move DateUtil to f4mClasses, it doesn't need to be part of the public API.

PARB changes: Move BinarySearch to layout package, it doesn't need to be part of the public API.

PARB changes: Move Base64Decoder to f4mClasses, it shouldn't be part of the public API.