kernel32: add stub for GetConsoleDisplayMode() et al

[Kirill K. Smirnov]

Hi,

In the first patch of the series you really implement 
SetConsoleDisplayMode() instead of GetConsoleDisplayMode(), don't you?

And it is dangerous to return success in pure stub functions, especially 
GetConsoleDisplayMode(). Returning FALSE and setting last error to 
ERROR_CALL_NOT_IMPLEMENTED will be much better.

--
Kirill