Set loaderInfo on stage
Don't throw if sprite symbols have more than one frame defined
Fix native binding of AS2Utils class

I regressed this while untangling the `avm1`, `avm1lib` and `flash` build targets.
Merge pull request #1433 from tschneidereit/nat

Fix native binding of AS2Utils class
Add `_root` and `_level0` properties to AS2MovieClip

These should be invisible to script in that `hasOwnProperty` should return false for them, but for now this is ok.
Merge pull request #1434 from tschneidereit/nat

Add `_root` and `_level0` properties to AS2MovieClip
Merge branch 'nat' of github.com:mozilla/shumway into nat
Merge branch 'nat' of https://github.com/mozilla/shumway into nat
Some options cleanup.
Take clipping and masks into account when hit testing
Fix finding mouse target
Merge pull request #1430 from tobytailor/nat

Get droid.swf to work
Merge branch 'nat' of https://github.com/mozilla/shumway into nat
Complete previous merge
Merge branch 'nat' of github.com:mozilla/shumway into nat
Merge branch 'nat' of https://github.com/mozilla/shumway into nat
Use a separate allocator for caching shapes.
Adds option to set caching threshold.
Disables caching when computing clip regions.