wineps.drv: Add a heuristic to cope with resolution strings of the form "nnnmmmdpi" (ie without the 'x' separator).

server: Explicitly shutdown closed pipes to prevent access from file descriptors cached in the client.

shell32: Return Unicode strings from all of the IShellFolder::GetDisplayNameOf functions in not running in Win9x mode.

winebuild: Check if a given forward does exist in one of the imported dlls, fix a couple of problems detected.