Re: kernel32: Prevent second loading of a library with specified path.

[Alexander Morozov]

> This should most likely be done in ntdll. Also please add tests for
> these different cases.

For tests should create dll which can be loaded. But I do not know how to 
implement this in tests on WINE. I tried to copy and rename .exe.so module 
but it seems like the problem is existing only for PE modules.