fixed MovieClip docs, contained outdated event info
fixed that ADDED_TO_STAGE event was not dispatched in some situations (closes #437, refs #426)
not calling 'advanceTime' any longer when context is lost (closes #430)

Previously, I only avoided 'render' calls; however, there's also normal user-code that will fail while the context is invalid (e.g. creating a texture). So I shouldn't call any user-code before the context is restored.
now making sure that the correct Starling instance is used when creating assets (closes #433)
now pinning down the starling instance only on 'loadQueue'; added more documentation (refs #433)
fixed wrong method name in API docs
Merge remote-tracking branch 'refs/remotes/upstream/master'

Conflicts:
	starling/src/starling/display/DisplayObject.as
Merge remote-tracking branch 'refs/remotes/upstream/master'
added support for rotated SubTextures (closes #86)
making sure 'mTextBounds' is not null when text field is restored after context loss (closes #453)
added 'rgb' and 'alpha' arguments to 'RenderTexture.clear' (closes #460)
added static 'defaultTextureFormat' property to TextField (closes #461)
added missing 'mContextValid' setting in 'Starling.dispose' method (refs #456)
now prefering RectangleTextures even for POT textures (closes #409)

Because of Stage3D-internals, POT-Textures use up more memory as necessary (they always allocate mipmaps, whether you need or not). RectangleTextures do not suffer from this problem, so it makes sense to default to RectangleTextures all the time.

The downside: after it has been created, you cannot change the "repeat" property of a texture any more. The repeat setting must now be chosen when you create the texture. For this reason, all "Texture.from..." methods now contain a new "repeat" property.

Thus, this change breaks the API at this point (although I don't expect the repeat property to be in use very often).
removed obsolete code
fixed maximum size of QuadBatch

That old value has been in there since the beginning; either I had it wrong back then, or the stage3D specification changed. ;-) Thanks to shin10 for making me aware of this!
added new 'TextureOptions' class, used by 'Texture.fromData' and 'AssetManager.enqueueWithName'

In the Texture class, this makes the huge number of parameters to the "from..."-methods easier to handle; in the AssetManager, this allows to supply custom options for each added texture.
removed obsolete imports
Optimization: avoiding 'push' call
setRenderTarget function to set renderToTexture with all possible parameters (AA is not supported by runtime at this moment unfortunately)