OSMF SVN

Unit tests for LoadableProxylElement and MediaElementLoadaedContext. FMMLoader now parsing and loading up media files. Skeleton for Composite DownloadableTrait tests.

1) Removed unnecessary linked resource in MASTSample project file
2) Renamed streamType to fileFormat in FMSURL

Added IDownloadable test cases to the example player.

IDownloadable Composite trait.

Attempted fix for build.

Committing metadata merge refactoring.

Update asdocs

Fixing the loop bug in the branch.

Add RTMP poster frame example.

Fix bug FM-190 - Parallel compositions can get locked into a "seeking" state, which prevents further seeks. This was due to a mismatch between canSeekTo and seek.