OSMF SVN

Fix bug 514

Fix bugs FM-547 and FM-558

Put gate around autoRewind code, to prevent possibility of an infinite loop (which could happen if you create a SerialElement with the last child a DurationElement of duration zero).

Fix bug FM-189: SerialElement doesn't display last child if it lacks the PlayTrait. Added example to ExamplePlayer showing a poster frame at end of playback (which was impossible prior to this fix).

Make poster frame example unloadable.

Fix FM-556: When MediaPlayer enters error state, capabilities should be set to false, and capability change events should be dispatched. Also fixed typo in one of the capability change event names.

Refixing preloader example after the false and true were swapped in a refactoring. FM-518.

Fix bug FM-555: RTE when SerialElement child has a load error.

Fix bug FM-331: Unable to seek within a temporal element. The bug is due to the composite SeekTrait being initialized prior to the composite TimeTrait, which it depends on. The fix is for the composite SeekTrait to listen for the composite TimeTrait being added or removed. Note that this required an API addition on the base SeekTrait, exposing a protected setter for the TimeTrait (a protected getter already existed).

Fix bug FM-373: SerialElements can't seek if certain children are unseekable. Updated RTMPPosterFrameElement to use a ProxyElement-based approach with blocked traits (much simpler and more robust).