Renames avm1lib's $nativeObject and init
Adds AS2 flash.external.ExternalInterface
target argument of MovieClipLoader#loadClip and unloadClip may be level

According to the document[1,2], "target" argument of these methods may
be number (level).

[1]: http://help.adobe.com/en_US/AS2LCR/Flash_10.0/help.html?content=00001381.html
[2]: http://help.adobe.com/en_US/AS2LCR/Flash_10.0/help.html?content=00001389.html
Set Loader URL from URLRequest.
Merge branch 'master' of https://github.com/mozilla/shumway
Merge branch 'master' of https://github.com/mozilla/shumway
Merge branch 'master' of https://github.com/mozilla/shumway
Rename get/setSlot
Clean up property enumeration, WIP.
Always check if the property exists when enumerating.
Refactoring ShumwayStreamConverter (see bug 924571)
Merge pull request #833 from yurydelendik/bug924571

Refactoring ShumwayStreamConverter (see bug 924571)
Don't pollute objects with enumerable properties.
Merge pull request #832 from mbebenita/enum

Enum Fixes / Cleanup
Merge pull request #837 from tschneidereit/master

Moar TextField goodness
Regenerate avm1lib (#763)
Merge branch 'master' into loadClip

Conflicts:
	src/avm2/generated/avm1lib/avm1lib.abc
Merge pull request #839 from tschneidereit/master

Fix handling of font set via TextField#defaultTextFormat
Merge pull request #838 from yurydelendik/loadClip

Load clip fixes for AVM1
Merge branch 'master' into avm1lib-2

Conflicts:
	src/avm2/generated/avm1lib/AS2Globals.as
	src/avm2/generated/avm1lib/AS2MovieClip.as
	src/avm2/generated/avm1lib/avm1lib.abc