compile

git-svn-id: http://haxe.googlecode.com/svn/trunk@6455 f16182fa-f095-11de-8f43-4547254af6c6
handle implicit casts for abstract constructor arguments (fixed issue #1710)

git-svn-id: http://haxe.googlecode.com/svn/trunk@6456 f16182fa-f095-11de-8f43-4547254af6c6