Fix bugs in handling of uninitialized timelineBuffers
Change SWF parser to create RGBA uint32s instead of objects with components for each color channel

Reduces memory and CPU usage because we want uint32s pretty much everywhere.
Merge pull request #1420 from tschneidereit/nat

Change SWF parser to create RGBA uint32s instead of objects with components for each color channel
Only enter/exit profiling timeline in RenderableTileCache#_cacheTiles if profiling is enabled
Make the AVM1 interpreter work in release mode

... by making the relevant symbols release-mode symbols.
Merge pull request #1421 from tschneidereit/nat

Only enter/exit profiling timeline in RenderableTileCache#_cacheTiles if profiling is enabled
Merge.