removed setErrorHandler (no longer useful with modern debug tools)

git-svn-id: http://haxe.googlecode.com/svn/trunk@6274 f16182fa-f095-11de-8f43-4547254af6c6
show detailed Failure information only if OCAMLRUNPARAM = "b"

git-svn-id: http://haxe.googlecode.com/svn/trunk@6275 f16182fa-f095-11de-8f43-4547254af6c6