Update Graphics.js

Bugfix: fill doesn't work on beginLinearGradientFill, beginRadialGradientFill, beginBitmapFill.
Bugfix: Graphics.js
Bugfix: Graphics.js
Bugfix: fix children initialization in DisplayObjectContainer's constructor.
Bugfix: fix children initialization in DisplayObjectContainer's constructor.
Bugfix: fix children initialization in DisplayObjectContainer's constructor.
Bugfix: fix children initialization in DisplayObjectContainer's constructor.
Bugfix: DisplayObject.prototype.globalToLocal
Bugfix: DisplayObject.prototype.globalToLocal
Bugfix: DisplayObject.prototype.globalToLocal
Bugfix: DisplayObject.prototype.globalToLocal
Bugfix: DisplayObject.prototype.globalToLocal