g++-4.0 checnged the timeline of object instatiations. Therefore it is

not always possible to access a typedef inside "const Foo" class, even
if it is possible to access the same typedef inside the mutable "Foo"
class. A proper fix would introduce bigger changes in the interface,
especially in the template parameters. The quick fix are a bunch of
RemoveConsts to access the typedefs via mutable class.

[[Imported from SVN: r3546]]