Fixes broken AS2 object construction
Disables AVM1 flash object for SWF v7 and below
Merge branch 'master' of github.com:mozilla/shumway
Moves AS2Utils.ts to the avm1lib
Merge pull request #1584 from yurydelendik/master

[AVM1] Fixes AS2Utils location, disables flash.* for SWF7, regression fix