added Array.map/filter compat for IE8, fixed DCE issues with abstract types

git-svn-id: http://haxe.googlecode.com/svn/trunk@5898 f16182fa-f095-11de-8f43-4547254af6c6
support Array.map/filter for flash

git-svn-id: http://haxe.googlecode.com/svn/trunk@5899 f16182fa-f095-11de-8f43-4547254af6c6