UnresolvedType.signatureToName: fix '*' case for generic type '?'

UnresolvedType.signatureToName: fix '*' case for generic type '?'

In generic type lists, after a '*' in any type parameter list, sometimes
the '*' (which should be converted to '?') itself and always the
subsequent parameters would be missing from the signature:

  - '[Pjava/util/Collection<*>;' yielded
    'java.util.Collection<>[]', but should be
    'java.util.Collection<?>[]'

  - '[Pjava/util/Map<*Pjava/util/List<[Ljava/lang/Integer;>;>;' yielded
    'java.util.Map<?>[]', but should be
    'java.util.Map<?,java.util.List<java.lang.Integer[]>>[]'

This is now fixed.

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>