ntdll: Added stubs for the Rtl*GenericTable* functions

[Vitaliy Margolen]

Is there are any reason why do you need this functions at all? According
to ddk they are part of "Installable File System Drivers". This is a
kernel level thing only and no user app should use these routines.
Especially stabbing them won't do you any good if something actually
using them. But that something has no place to run in Wine yet.

Vitaliy.