oleaut32: Add a test for the memory pointed to by a byref parameter being preserved through a remote IDispatch::Invoke call.

It has nothing to do with OpenGL, so shouldn't be in "gl_formats_template".
This fixes a regression introduced by e1469961.

server: Extend get_token_user server call to also retrieve SIDs for the token's owner or primary group.

ole32: OleInitialize should return S_OK if it is called for the first time on a thread independently of CoInitializeEx.