Fix Graphics#drawCircle and #drawEllipse

Turns out the old playerglobals self-hosted these, so the native functions weren't ever called
Fix EventDispatcher#toString
Add [native] metadata to flash.net.URLStream builtin
Implement NetStreamMulticastInfo#toString

And reformat the file
Add missing builtin flash.utils.Endian
Add missing builtin flash.utils.IExternalizable
Add missing builtin flash.utils.ObjectInput
Add missing builtin flash.utils.ObjectOutput
Add `cancelable` property to some event classes' toString formatting
Fix Event#formatToString's output
Add new builtins to playerglobal manifest.json
Fix SetIntervalTimer to not switch behavior of setTimout and setInterval
Add definitions for flash.net.registerClassAlias and flash.net.getClassByAlias builtins