[try2] kernel32: Add partial stub for NeedCurrentDirectoryForExePath

[Kirill K. Smirnov]

> If FILE_name_AtoW fails, the function fails, so the return value should be 
> FALSE, shouldn't it ?

TRUE means that current directory '.' should be added to PATH.
FALSE is returned if a special environment variable 
NoDefaultCurrentDirectoryInExePath is set.

Of course, default sane value should be TRUE.

Details at http://msdn2.microsoft.com/en-us/library/ms684269.aspx.

--
Kirill