Add 'set'. Fix toString

git-svn-id: http://haxe.googlecode.com/svn/trunk@5970 f16182fa-f095-11de-8f43-4547254af6c6
added haxe.Timer specification

git-svn-id: http://haxe.googlecode.com/svn/trunk@5971 f16182fa-f095-11de-8f43-4547254af6c6