consider with_type for map comprehension if target is Map

git-svn-id: http://haxe.googlecode.com/svn/trunk@6213 f16182fa-f095-11de-8f43-4547254af6c6
more precise error message if -main does not start with uppercase character

git-svn-id: http://haxe.googlecode.com/svn/trunk@6214 f16182fa-f095-11de-8f43-4547254af6c6