fix conficting loop control vars
Merge remote-tracking branch 'upstream/master' into interfaces-fix
clean up
AVM1: Validates amount of arguments for the functions
clean up
AVM1: Better stack recovery after method calls
AVM1: Removes window from the scope chain
Merge pull request #157 from yurydelendik/avm1-guards-2

Adds more guards for AVM1 interpreter
Merge pull request #158 from artcompiler/interfaces-fix

Interfaces fix. Only the first implemented interface was being recognized as an interface of the implementing class.
Merge remote branch 'upstream/master' into uri-mangling
checkpoint