added haxe.ds.Option

git-svn-id: http://haxe.googlecode.com/svn/trunk@6115 f16182fa-f095-11de-8f43-4547254af6c6
initial replacer support for Json

git-svn-id: http://haxe.googlecode.com/svn/trunk@6116 f16182fa-f095-11de-8f43-4547254af6c6
even more errors

git-svn-id: http://haxe.googlecode.com/svn/trunk@6117 f16182fa-f095-11de-8f43-4547254af6c6