map FInstance when expanding generics (fixed issue #1683)

git-svn-id: http://haxe.googlecode.com/svn/trunk@6421 f16182fa-f095-11de-8f43-4547254af6c6
correctly handle module sub paths in interp (fixed issue #1505)

git-svn-id: http://haxe.googlecode.com/svn/trunk@6422 f16182fa-f095-11de-8f43-4547254af6c6