neko std lib cleanup for haxe 3

git-svn-id: http://haxe.googlecode.com/svn/trunk@6055 f16182fa-f095-11de-8f43-4547254af6c6
cpp and php std lib cleanup for haxe3

git-svn-id: http://haxe.googlecode.com/svn/trunk@6056 f16182fa-f095-11de-8f43-4547254af6c6
more cleanup

git-svn-id: http://haxe.googlecode.com/svn/trunk@6057 f16182fa-f095-11de-8f43-4547254af6c6