ntdll: Implement few Dbg* functions.

[Eric Pouech]

Eric Pouech wrote:
> Eric Pouech wrote:
> 
>> IMO, the Ui ones seem to be rather old (NT4 or something) whereas the 
>> ones I'm talking about are more recent (XP), but seem better defined 
>> (API wise). For example, only XP version seems to provide the wait for 
>> debug object and continue APIs. That's why it seems to me more 
>> interesting to me that we move to the XP flavor.
> 
> actually, you could implement it on top of Ui flavor as well
> we'll have to dig deeper to tell the differences
> A+
> 
/me putting the shovel away after some digging

the DbgUi* functions are the one called from kernel32, but refer to a 
single debug object, stored in the TEB in DbgSSReserved array
They call the 'simple' Dbg functions, which allow a given debugger 
thread to handle one than a debugging object (compared to the DbgUi ones).
we can safely start by implementing the DbgUi functions in ntdll. If 
needed we can move later one to the Dbg ones.

-- 
Eric Pouech